Đề ôn tập Chương 1 môn Đại số 9

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1. Bài 1 : Tớnh (ruựt goùn): ( 7 2)( 7 2) (5 2 3)(5 2 3) (7 2 3)(7 2 3) 2 3 + 4 3 - 2 15 5 5 2 5 6 2 5 1 ( ) : 3 1 2 5 4 1 3 5 5 2 7 7 7 7 1 1 14 - 7 15 - 5 1 A = + : 1 7 1 7 2 -1 3 -1 7 - 5 3 3 21 7 (3 )( 2) 5 5 15 3 3 2 1 3 7 1 5 3 15 5 5 2 5 3 6 21 15 + 1 + 1 3 1 2 5 4 2 3 7 5 2 3 3 2 2 2 3 3 2 3 2 2 3 2 6 1 2 3 3 2 1 2 3 6 18 2 2 ( 3 3) 3 2 2 2 2 2 2 3 2 2 3 5 - 2 6 3 4 19 8 3 6 8 2 2 2 3 2 2 3 (7 4 3) : 3 2 2 2 3 6 3 5 5 2 6 2 5 1 ( ) : ( ) : 2 1 5 1 5 3 1 3 5 5 2 6 2 5 5 1 ( ) : (5 4 2)(3 2 1 2 )(3 2 1 2 ) 1 3 1 5 2 5 2 3 6 8 4 2 3 2 2 3 4 2 3 6 8 4 3 4 5 8 2 15 21 35 6 8 10 27 36 45 3 5 7 a 2 a 3a a a 3 a 5 a ab (3 )(3 ) 2 2 a 2 3 a 1 a 3 b 5 a 4 a 4 4 a 9 a 9 6 a a 6 a 2 a 2 a 3 a 3 a a a a x 6 x 9 x 4 x 4 (1 )(1 ) 1 a a 1 x 3 x 2 x y 3 x 3 y x y 3 Bài 2 : Tớnh (ruựt goùn): 2 2 2 2 4 15 15 3 3 2 2 2 2 4 (2 5) 2 14 6 5 ( 5 3)2 9 4 5 1
2. 2 2 3 2 2 2 - 2 3 - 3 4 2 3 4 2 3 (1 3)2 2 3 4 7 4 3 14 8 3 21 12 3 5 2 6 5 2 6 7 2 10 7 2 10 4 2 3 12 6 3 14 6 5 14 6 5 17 12 2 9 4 2 4 2 3 7 4 3 6 4 2 3 2 2 8 2 7 + 9 4 2 3 2 2 11 6 2 11 4 7 16 6 7 11 4 6 11 4 6 29 12 5 29 12 5 8 2 15 23 4 15 8 2 15 48 6 15 49 5 96 49 5 96 15 6 6 33 12 6 16 6 7 64 24 7 14 6 5 14 6 5 11 6 2 - 3 2 2 13 4 10 13 4 10 46 6 5 29 12 5 17 3 32 17 3 32 30 3 52 30 3 52 (Bỡnh phương ) 53 12 10 47 6 10 5 2 6 2 3 5 9 4 5 4 9 4 2 2 17 4 9 4 5 9 4 5 13 4 10 1 2 3 4 19 8 3 1 (4 3) 19 8 3 ( 5 2 6 2) 3 2 2 2 1 3 1 3 2 2 : 2 4 2 3 2 1 (3 5 ) 7 2 10 (7 3 ) 10 2 21 (3 2 10 ) 28 12 5 (3 2) 11 6 2 21 7 5 21 2 2 2 2 1 1 2 3 3 3 2 2 2 2 2 2 3 2 2 3 1 1 3 3 2 6 2 3 7 4 3 2 5 2 . 2 3 24 8 5 2 3 4 2
3. 12 2 35 8 2 15 5 2 6 15 10 2 13 4 10 11 2 10 12 2 35 8 2 15 5 2 6 2 3 2 2 9 4 2 12 8 2 6 11 6 2 3 11 6 2 2 86 60 2 (5 21 )(14 6 ) 5 21 2 43 30 2 3 27 10 2 2 18 8 2 (4 15 )(10 6 )4 15 (3 5 )(10 2 ) 3 5 5 2 6 49 20 6 5 2 6 4 10 2 5 4 10 2 5 6 2 5 13 48 6 2 5 29 12 5 17 3 32 17 3 32 49 5 96 49 5 96 2 2 3 18 8 2 13 30 2 9 4 2 4 5 3 5 48 10 7 4 3 83 20 6 62 20 6 . 3 3 3 2 2( 21 3) 5 21 2( 5 1) 3 5 2 3 (6 2 )(2 3 )7 3 5 (7 3 5 )(3 2 10 ) (14 10 )(6 35 )6 35 2 4 6 2 5 (10 2 ) 2 3 2 2 3 2 3 2 3 2 2 9 17 9 17 2 3 6 3 3 2 3 2 3 3 5 3 5 3 5 3 5 2 3 2 3 4 15 - 4 15 - 2 3 9 17 9 17 2 4 15 4 15 + 6 4 7 4 7 - 14 6 35 6 35 14 8 55 8 55 125 9 17 9 17 2 A 6 3 3 6 3 3 3 5 3 5 2 7 3 5 5 21 5 21 2 4 7 4 7 4 7 8 4 7 4 7 2 7 7 2 4 7 7 2 4 4 15 4 15 2 3 5 2 1 2 1 2 2 2 ( Bỡnh phương 2 căn đầu ) 3 1 3 1 2 3 2 2 5 1 5 1 2 5 4 6 A 3 5 2 3 3 5 2 3 2 3 2 3 3 13 48 2 3 5 13 48 6 2 6 2 3
4. 8 2 10 2 5 8 2 10 2 5 4 10 2 5 4 10 2 5 1 1 1 5 7 ( 1 = đđặt nhõn tử chung, tiếp 5 5 7 7 13 13 5 7 1 1 1 7 13 5 13 5 7 tục đặt ( ) ở mẫu làm nhõn tử chung = 1 ) 1 26 640 27 810 30 1000 Gợi ý : 1 (4 10) 2 9(3 10) 10(3 10) 1 4 10 ( 9 10) 3 10 = 10 3 ( 10 3) 2 ( 10 3) 10 3 10 3 0 (TS 07-08) A = 7 4 3 7 4 3 (TS 08-09) A 12 6 3 21 12 3 (TS 10-11) 2 2 5 3 B 5 2 3 3 5 2 3 3 5 ( =10) (TS 10-11) 2 2 2 2 B 21 2 3 3 5 6 2 3 3 5 15 15 (=60) (TS 13-14) B (2 3) 26 15 3 (2 3) 26 15 3 ( =2 ) (TS 12-13) 5 5 5 3 5 A (TS 14-15) 5 2 5 1 3 5 B (13 4 3)(7 4 3) 8 20 2 43 24 3 (TS 15-16) 2 3 2 3 A (TS 16-17) 1 4 2 3 1 4 2 3 14 6 3 A = ( 3 1) (TS 17-18) 5 3 Bài 3 : Tớnh (ruựt goùn): Đưa thừa số ra ngoài dấu căn 5 2x 2 8x 8 3a 2 ( Với )a 0 a x 2 3 75 27 12 27 3 75 7 24 150 5 54 2 28 3 63 5 112 2 20 50 3 80 320 2 32 3 72 7 50 2 32 50 98 72 224 – 254 + 36 –150 2 5 125 80 605 125 – 220 – 380 + 445 32 – 418 + 232 –50 548 – 427 – 275 + 108 –250 +18 – 380 + 245 2 28 3 63 175 228 + 218 + 232 – 50 2 18 3 8 4 32 4
5. 36 – 463 – 3175 +112 612 –20 – 227 + 125 8 3 32 72 6 12 2 48 5 75 7 108 5 3 3 48 5 20 - 9 5 5 - 48 + 5 27 - 45 1 20 3 45 6 80 125 2 5 125 80 5 3 2 8 50 4 32 27 2 3 2 48 3 75 3 3 75 2 12 147 20 2 45 3 80 125 2 128 162 200 6 98 242 288 5 2 3 338 1 2 5 2 2 32 450 392 10 72 162 128 2 50 98 3 7 3 450 392 338 242 288 2 18 4 27 3 45 6 32 5 48 3 20 1 3 12 7 1 162 128 338 288 18 2 45 72 3 20 9 4 13 24 3 3 4 1 5 12 2 48 6 75 108 2 147 192 243 300 32 18 10 1 1 1 5 1 3 1 108 75 363 12 48 363 147 192 2 15 22 8 33 14 4 3 7 9 11 1 12 75 300 108 (5 48 3 27 2 12) : 3 2 5 10 6 5 8 3 2 25 12 4 192 2 10 12 2 5 3 3 5 48 (5 2 2 5) 5 250 2 112 5 7 2 63 2 28 7 (2 3 3 2) 2 3 96 24 ( 2 3) 2 24 2 48 - 2 2. 14 - 8 + 63 8 12 48 108 192 : 2 3 2 27 3 48 3 75 192 3 2 3 2 2 32 6 4 2 12 2 35 4 20 28 48 2 135 45 18 ( 135=3.45) 2 3 6 1 ( 2 3 5 ) 2 20 ( 1). 8 2 2 6 Đưa thừa số vào trong dấu căn : a b 1 (a 0,b 0 ) 3 12 b a 3 (2 3) 2 3 (2 3) 2 3 (4 15) 4 15 (4 15) 4 15 ( 35 6) 6 35 (6 35) 6 35 Bài 4 : Tớnh (ruựt goùn): 18 12 2 3 x 2 3 3 2 5
6. 2 5 1 x x 2 5 2 2 3 5 3 7 ( ) 15 5 3 7 3 16 1 4 1 9 1 2 3 6 75 5 1 2 27 3 27 75 3 2 3 1 1 8 32 18 6 5 14 18 0.5 3 75 9 25 49 3 8 1 4 36 4 1 1 3 2 4 1 2 ( 4,5 50) : 2 27 75 3 2 2 2 5 15 8 1 1 4 3 48 5 2 75 5 1 2 27 6 75 3 3 3 5 4 25 1 12 3 18 72 4 32 162 3 27 2 1 5 5 3 2 3 2 20 5 ( 6 2 4 )(3 12 6) 5 5 2 3 2 3 1 1 3 4 1 15 6 3 ( 2 200) : (2 )( 2) 2 2 2 5 4 35 14 7 1 3 - 3 1 10 27 - 6 + 20 5 3 3 5 2 1 30 1 54 1 50 - 2 96 - + 12 3 50 - 2 75 - 4 - 3 5 15 6 3 3 1 3 2 1 3 3 24 6 48 6 6 3 3 3 1 1 1 1 5 2 5 2 2 1 2 1 3 3 2 2 3 1 3 1 5 2 5 2 1 1 1 1 1 5 1 5 3 2 2 3 2 2 2 2 1 1 3 2 2 2 2 3 5 2 6 5 2 6 1 1 1 6 2 4 175 1 2 3 1 2 3 8 7 3 2 1 1 2 1 3 2 3 3 3 2 2 1 3 2 1 3 2 2 3 6 2 2 3 3 2 2 3 7 2 8 3 7 6
7. 8 15 5 2 2 5 6 20 - 30 2 5 2 2 10 10 3 2 2 3 2 2 5 2 6 5 2 6 17 12 2 17 2 2 49 20 6 49 20 6 4 2 3 4 2 3 7 2 10 7 2 10 28 16 3 28 16 3 89 28 10 89 28 10 6 2 5 6 2 5 1 1 1 1 2 56 24 5 56 24 5 5 2 5 2 2 1 3 3 3 2 3 2 : 3 2 3 2 2 3 3 2 2 3 12 2 3 3 2 3 1 3 2 3 3 4 1 6 1 2 3 4 3 1 3 2 3 3 3 2 7 5 5 2 7 3 3 2 1 5 2 1 5 2 2 2 3 2 3 7 2 3 2 1 6 7 2 1 1 1 5 1 1 3 3 5 2 3 3 5 7 5 15 4 12 2 3 15 1 6 . 6 1 6 2 6 3 3 1 3 2 3 3 3 5 5 1 6 7 5 1 2 2 4 11 3 7 7 2 2 5 2 6 8 2 15 1 1 1 49 20 6 49 20 6 7 4 3 1 1 3 8 3 3 2 5 1 4 2 3 7 48 14 6 5 17 3 32 29 12 5 12 2 35 15 2 3 15 4 12 ( ) : 28 10 3 ( )( 6 11) 3 3 1 3 3 2 1 6 6 2 3 6 4 7 4 7 2 3 2 3 B 4 7 4 7 2 3 2 3 1 3 2 2 3 2 6 2 2 14 2 3 3 2 2 3 3 7 3 2 14 6 3 3 3 5 5 3 1 3 1 3 1 5 2 5 2 6 2 2 15 12 1 1 2 3 2 5 2 2 3 6 2 1 14 7 6 3 2 2 1 2 1 1 7 7
8. 2 3 2 3 5 2 2 5 6 3 5 3 2 5 2 2 10 3 2 2 3 5 10 2 10 8 3 2 1 6 5 2 1 5 5 5 4 2 3 3 2 2 2 3 - 2 + 4 5 1 + 5 6 1 2 3 7 7 6 3 6 2 - 2 + 4 7 1 + 7 2 1 3 1 1 1 5 5 1 12 26 ( ) : ( )(4 3) 3 5 3 5 5 1 2 3 3 3 4 3 15 4 12 2 52 12 ( )( 6 11) ( )(5 27) 6 1 6 2 3 6 3 1 3 3 1 3 3 2 7 2 1 8 2 7 2 2 3 3 2 6 ( 6) : ( 2 3) 7 7 7 1 7 2 3 2 3 1 2 2 2 3 2 2 11 6 2 3 3 6 2 2 3 2 2 1 2 3 2 3 1 2 8 2 2 2 3 2 2 5 2 6 14 21 2 3 2 2 1 2 3 2 7 1 3 11 6 2 3 5 10 2 4 8 15 3 2 5 2 3 3 5 1 5 5 8 2 2 2 3 2 3 1 2 2 2 3 2 2 3 2 2 1 2 3 2 2 1 2 11 6 2 3 5 10 2 5 2 6 14 21 2 3 2 5 2 3 3 2 7 1 3 1 1 5 5 (2 5 3)(23 4 15) (2 5 3)(23 4 15) M : 3 5 3 5 5 1 2 3 2 3 ( ) : 3 6 3 2 2 3 2 2 6 3 2 2 7 4 3 7 4 3 3 3 2 3 2 3 1 3 1 1 3 1 2 4 2 3 2 4 2 3 1 1 2 2 3 2 2 3 3 3 ( Gợi ý : khụng nhõn phõn phối trờn tử,rỳt gọn tử và mẫu ) 2 2 3 2 2 3 3 5 3 5 ( Gợi ý : khụng nhõn phõn phối trờn tử,rỳt gọn tử và mẫu ) 2 3 5 2 3 5 8
9. 2 3 2 3 ( Gợi ý : khụng nhõn phõn phối trờn tử,rỳt gọn tử và mẫu ) 2 2 3 2 2 3 3 5 3 5 2 ( 5 1) 2 ( 5 1) 2 (Gợi ý : ) ( ) 2 2 2 3 5 2 2 3 5 2 5( 5 1) 5( 5 1) 4 7 4 7 6 4 2 6 4 2 3 2 4 7 3 2 4 7 2 6 4 2 2 6 4 2 2 10 30 2 2 6 2 (4 3 4) 3 5 13 2 12 : (Đặt và2 nhúm) 2 10 2 2 3 1 2 2 2 5 1 1 (5 24)(49 20 6) 5 2 6 ( ) : 3 3 3 12 6 3 9 3 11 2 2 2 3 11 4 6 33 12 6 1 1 1 1 2 2 3 99 100 1 3 4 8 15 A = (TS 09-10) 3 5 1 5 5 3 3 4 3 4 A (TS 11-12) 2 3 1 5 2 3 Bài 5 : Tớnh (ruựt goùn): x 1 x 1 x x 2x 4 x 8 B = . (x > 0; x ≠ 4). (TS 08-09) x 4 x 4 x 4 x x y x y x xy B = : (TS 09-10) 1 xy 1 xy 1 xy x x 2x 28 x 4 x 8 B (x 0, x 16) (TS 11-12) x 3 x 4 x 1 4 x 1 2 x 1 A với x > 0; x 1 (TS 12-13) x x x 1 x x x 3 x 3 A . (TS 13-14) x 3 x 3 x 9 x 1 2 6 B : 1 (TS 14-15) x 3 x x 3 x x 3 x x x 1 x 10 A (x 0, x 4) (TS 15-16) x 2 x 2 x 4 x 1 1 2 : x 1 x x 1 x x 1 1 1 x + 2 x . x 4 x + 4 x 4 x 9
10. x x 1 x 1 x 2 x 2 x 1 . x 1 x 1 x 2 x 1 x 1 x 1 1 x 1 x 2 x 2 x2 2x 1 : . x x x 1 x 2 x 1 x 1 x 2 x 1 2 1 1 2 1 1 x 1 : 1 : a a a 1 a x x x 1 x 2 x 1 2 x 9 2 x 1 x 3 P ( x 3)( x 2) x 3 x 2 x 1 1 1 1 : x x x x x2 x a 2 2 a 2 2 1 1 3 a 3 a 1 4 a 4 1 \\ a 3 a 3 a a 2 a 2 4 a x 1 1 x x 1 x x 1 2 x 2 x 1 A = + + : x- 4 x - 2 x + 2 x x x x x 1 1 3 2 x 4 3 x 2 x : x 1 x x 1 x x 1 x x 2 x 2 x x 2 x 1 x 2 x 1 x 2 x 1 1 x 1 x x 1 x x 1 x x 1 x x 1 x 1 x 1 2x x 1 3x x 2x x 3 15 x 11 3 x 2 2 x 3 x 1 x x 1 x x 1 x 2 x 3 x 1 x 3 x 1 x 3 x 5 3 x 2 x 1 x 6 x 5 x 1 x 2 x x 2 2 x 1 x 4 2x 7 x 4 x 4 x 2 24 x 1 1 2 : 1 1 7 x x 1 7x 6 x 1 a a a 1 a 5 x x x x 5 x 25 x x 3 x 5 2 x 1 : x 4 x 2 x 2 x 25 x 2 x 15 x 5 x 3 2 a 9 a 3 2 a 1 1 2 x 2 1 2 : a 5 a 6 a 2 3 a x 1 x x x x 1 x 1 x 1 2 x x 3x 3 2 x 2 1 1 x 1 : 1 : x 3 x 3 x 9 x 3 x x x 1 x 2 x 1 a 2 5 1 x 1 x 1 x x 2x 4 x 8 . a 3 a a 6 2 a x 4 x 4 x 4 x x 2 x 1 x 1 2x 1 x 1 x 3 1: x 3 x x 1 x 1 x x 1 x 1 x x 1 1 x x 3 x 9 x x 3 x 2 3 1 : (KQ : A= ) x 9 x x 6 x 2 x 3 x 2 10
11. 15 x 11 3 x 2 2 x 3 2 5 x (KQ: A = ) x 2 x 3 1 x x 3 x 3 x 2 x 1 1 x ( KQ : A = ) x x 1 x x 1 1 x x x 1 1 3 2 x ( KQ : A = ) x 1 x x 1 x x 1 x x 1 x 5 x 25 x x 3 x 5 5 1 : ( KQ : A = ) x 25 x 2 x 15 x 5 x 3 x 3 2 a 9 a 3 2 a 1 a 1 ( KQ : A = ) a 5 a 6 a 2 3 a a 3 x x 7 1 x 2 x 2 2 x x 9 : ( KQ : A = ) x 4 x 2 x 2 x 2 x 4 6 x x 4 3 x 2 x : (KQ: A = 1 x ) x x 2 x 2 x x 2 1 1 1 1 1 3 : (KQ: A = ) 1 x 1 x 1 x 1 x 2 x 2 x 2x 1 1 x 4 x : 1 (KQ: A = ) 3 x 1 x 1 x x 1 x 3 1 2 x 2 1 2 x 1 : (KQ: A = ) x 1 x x x x 1 x 1 x 1 x 1 2 x x 3x 3 2 x 2 3 : 1 ( KQ : A = ) x 3 x 3 x 9 x 3 a 3 x 1 x 1 8 x x x 3 1 4 x : (KQ: A = ) x 1 x 1 x 1 x 1 x 1 x 4 1 1 x 1 x 1 : (KQ: A = ) x x x 1 x 2 x 1 x x 1 1 8 x 3 x 2 x x : 1 ( KQ : A = ) 3 x 1 3 x 1 9x 1 3 x 1 3 x 1 x 2 x 2 x2 2x 1 . (KQ: A = x(1 x) ) x 1 x 2 x 1 2 x 2 x 1 x 1 2 : (KQ: A = ) x x 1 x x 1 1 x 2 x x 1 x x 3 x 2 x 2 x 2 1 : (KQ: A = ) 1 x x 2 3 x x 5 x 6 x 1 1 1 1 x 1 x : (KQ: ) x x x 1 x 2 x 1 x 11
12. x 1 x 1 x x 2x 4 x 8 . (KQ: 6 ) x 4 x 4 x 4 x x 1 x 1 1 4 x 1 4 1 () . x 1 x 1 x x 1 x x 1 Căn bậc ba 1 Tớnh : 3 125 3 343 23 64 3 216 3 3 10 6 3 ( 3 1) ()10 6 3 ( 3 1)3 6 2 5 5 3(2 5)3 17 5 38 5 14 6 5 Tỡm x : 3 2x 1 5 0 Tỡm x : 3 x 1 2 Bài 6 : Giải phương trỡnh : B 0vàA 0 A B Dạng 1 : 2 A B 4x 3 2x 0 4x 2 2x 1 5 x 3 2 x 5 3 2x 3 7 x 2 2x 2 x 2 3x 1 4 3x 6 2 3 5x 1 2 3 x 4x 9x 6 2 2 - 4 - x 0 x 1 3 2 3 - 4 + 8x 0 2x 3 13 2x 3 2 x 1 2 2x 15 3 5 2x 9 2x 3 3 x 5 1 2x 1 2 1 6x + 6x + 24x = 2 3 3 2 3x 4 3x 25 3 3x 0 3 2x 5 8x 20 18x = 0 5 4x 8 2 9x 18 0 4 x 4 x 1 9 x 9 16 1 16x 16 9x 9 1 9x 9 16x 16 32 4 4x 4 + 9x 9 = 5 2 25x 25 - 16x 16 = 3 2 16x 16 9x 9 4x 4 x 1 8 5 4x 8 2 9x 18 0 x 1 9x 9 2 6 x2 4x 3 x 1 4 x 5 x2 2x 4 x 5 0 4x 20 3 x 5 4 9 2x 3 3 x x 12 18 x 8 27 a) x2 2x 1 1 x – 5x 2 = - 2 b) 2x 8x 12 12
13. Dạng 2 : B 0 A B A BhayA B 2 4 x + 5 6 4(x 2)2 8 2 4 1 - x 3 = 1 9(x 2)2 + 5 8 x 2 6x 9 3 x 2 8x 16 2 x2 2x 1 7 4x2 4x 1 3 9x 2 6x 1 3 b) x2 6x 9 5 x2 2x 1 x2 1 x 2 6x 9 3x 1 4x 2 12x 9 x 1 x 4x 2 4x 1 2 4x2 20x 25 1 25x2 30x 9 x 7 x2 2x 1 2x 5 x2 6x 9 2(x 1) 9x 2 12x 4 = 5 (3 2x)2 6 x2 2x 1 2 Giải bằng 2 cỏch : x 2 x x 2 x 4x2 4x 1 2x 1 4x2 2x 1 2x 1 x 2 2x 1 x 1 x 2 4x 4 x 2 x2 8x 16 x 2 4 4x x2 x 2 x 2 2x 1 7 Dạng 3 : A 0vàB 0 A B A B 3x 2 x 6 x 3 2 x 2x 1 x 2 2 x 4 x x 5 x 2 4x 20 3 1 x 9x 18 4 1 x 9 4 Dạng 4 : A B A B x2 2x 1 x2 6x 9 0 Nõng cao : 4x2 4x 1 x2 2x 1 0 Bài 7 : Tỡm giỏ trị nhỏ nhất và lớn nhất Dạng 1 : Tỡm giỏ trị nhỏ nhất 2x 2 1 x 2 2x 2 x 2 4x 9 x 2 2x 5 x 2 2x 5 x 2 2x 5 x 2 6x 10 x 2 2x x 2 6x 2x 2 4x 13
14. 1 3x 2 6x 2 x 2 3x 1 2x 2 5x 8 2 3x 2 4 9 2x 2 4m 2 12m 15 ( TS 11- 12 ) 6 ( TS 12- 13 ) m 2 2m 4 Dạng 1 : Tỡm giỏ trị lớn nhất 3x 2 2 x 2 2x 1 x 2 6x 2 1 5x 2 20x 7 x 2 2x 5 3x 2 3x 1 3 m 2 m 6 ( TS 10 -11 ) 14