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ï¼ ï¼11.å å¼å解9x2ï¼1ï¼ (1)(9xï¼1)(9xï¼1) (2)(3xï¼1)2 (3)(3xï¼1)(3xï¼1) (4)(9xï¼1)2ã
ï¼ ï¼12.è¥5x2ï¼7xï¼6ï¼(5xï¼a)(xï¼b)ï¼å (1)aï¼-3 (2)bï¼-2 (3)abï¼6 (4)aï¼bï¼5ã
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ï¼ ï¼14.æ¾åºä¸åä½è
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cdï¼6 (4)è¥aï¼1ï¼åå¿
dï¼-1ã
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ï¼ ï¼18.x2ï¼y2çæ¼ (1)(xï¼y)2 (2)(xï¼y)2ï¼2xy (3)(xï¼y)2ï¼2xy (4)(xï¼y)2ï¼2xyã
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¶å®½ä¸º (1)(2xï¼1)cm (2)(xï¼3)cm (3)(2xï¼4)cm (4)(2xï¼2)cmã
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ï¼ ï¼22.å å¼å解x2ï¼3xï¼2ï¼(xï¼a)(aï¼b)å (1)aï¼bï¼3 (2)aï¼0ï¼bï¼0
(3)abï¼-2 (4)aï¼0ï¼bï¼0ã
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ï¼ ï¼27.è¥(xï¼5)2ï¼(xï¼5)ï¼12å¯å解为(xï¼a)(xï¼b)ï¼åaï¼bçæ¼ (1)-11 (2)9 (3)11 (4)-9ã
ï¼ ï¼28.axï¼cxï¼byï¼cyï¼bxï¼ayå¯å解为ä¸åä½å¼ï¼ (1)(xï¼y)(aï¼bï¼c)
(2)(xï¼y)(aï¼bï¼c) (3)(xï¼y)(aï¼bï¼c) (4)(xï¼y)(aï¼bï¼c)ã
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1.è¥2x3ï¼3x2ï¼mxï¼1为xï¼1çåå¼ï¼åmï¼
2.å å¼å解3a3b2cï¼6a2b2c2ï¼9ab2c3ï¼
3.å å¼å解xyï¼6ï¼2xï¼3yï¼
4.å å¼å解x2(xï¼y)ï¼y2(yï¼x)ï¼
5.å å¼å解2x2ï¼(aï¼2b)xï¼abï¼
6.å å¼å解a4ï¼9a2b2ï¼
7.è¥å·²ç¥x3ï¼3x2ï¼4å«æxï¼1çå å¼ï¼è¯å解x3ï¼3x2ï¼4ï¼
8.å å¼å解ab(x2ï¼y2)ï¼xy(a2ï¼b2)ï¼
9.å å¼å解(xï¼y)(aï¼bï¼c)ï¼(xï¼y)(bï¼cï¼a)ï¼
10.å å¼å解a2ï¼aï¼b2ï¼bï¼
11.å å¼å解(3aï¼b)2ï¼4(3aï¼b)(aï¼3b)ï¼4(aï¼3b)2ï¼
12.å å¼å解(aï¼3)2ï¼6(aï¼3)ï¼
13.å å¼å解(xï¼1)2(xï¼2)ï¼(xï¼1)(xï¼2)2ï¼
14.è¥2Ã4Ã(32ï¼1)Ã(34ï¼1)Ã(38ï¼1)Ã(316ï¼1)ï¼3nï¼1ï¼æ±nï¼ ã
15.å©ç¨å¹³æ¹å·®å
¬å¼ï¼æ±æ åå解å¼4891ï¼ ã
16.2xï¼1æ¯ä¸æ¯4x2ï¼5xï¼1çå å¼ï¼çï¼ ã
17.è¥6x2ï¼7xï¼mæ¯2xï¼3çåå¼ï¼åmï¼
18.x2ï¼2xï¼1ä¸x2ï¼1çå
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19.è¥xï¼2æ¯x2ï¼kxï¼8çå å¼ï¼æ±kï¼ ã
20.è¥4x2ï¼8xï¼3æ¯2xï¼1çåå¼è¯·å å¼å解4x2ï¼8xï¼3ï¼ ã
21.2xï¼1æ¯4x2ï¼8xï¼3çå å¼ï¼è¯·å å¼å解4x2ï¼8xï¼3ï¼ ã
22.(1)xï¼2 (2)xï¼4 (3)xï¼6 (4)xï¼6 (5)x2ï¼2x3ï¼24 ä¸åä½è
x2ï¼2xï¼24çå å¼ ï¼å
¨å¯¹æç»åï¼
23.å å¼å解ä¸ååå¼ï¼
(1)abcï¼abï¼4aï¼ ã
(2)16x2ï¼81ï¼ ã
(3)9x2ï¼30xï¼25ï¼ ã
(4)x2ï¼7xï¼30ï¼ ã
24.è¥x2ï¼axï¼12ï¼(xï¼b)(xï¼2)ï¼å
¶ä¸aãbå为æ´æ°ï¼åabï¼ ã
25.请å°éå½çæ°å¡«å
¥ç©ºæ ¼ä¸ï¼x2ï¼16xï¼ ï¼(xï¼ )2ã
26.å å¼å解ä¸ååå¼ï¼
(1)xyï¼xzï¼xï¼ ï¼(2)6(xï¼1)ï¼y(xï¼1)ï¼
(3)x2ï¼5xï¼pxï¼5pï¼ ï¼(4)15x2ï¼11xï¼14ï¼
27.设7x2ï¼19xï¼6ï¼(7xï¼a)(bxï¼3)ï¼ä¸a,b为æ´æ°ï¼å2aï¼bï¼
28.å©ç¨ä¹æ³å
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29.计ç®(1.99)2ï¼4Ã1.99ï¼4ä¹å¼ä¸º ã
30.è¥x2ï¼axï¼12å¯å解为(xï¼6)(xï¼b)ï¼ä¸a,b为æ´æ°ï¼åaï¼bï¼ ã
31.å·²ç¥9x2ï¼mxï¼25ï¼(3xï¼n)2ï¼ä¸n为æ£æ´æ°ï¼åmï¼nï¼ ã
32.è¥2x3ï¼11x2ï¼18xï¼9ï¼(xï¼1)(axï¼3)(xï¼b)ï¼åaï¼bï¼ ã
33.2992ï¼3992ï¼
34.å¡«å
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35.å å¼å解x2ï¼25ï¼ ã
36.å å¼å解x2ï¼20xï¼100ï¼ ã
37.å å¼å解x2ï¼4xï¼3ï¼ ã
38.å å¼å解4x2ï¼12xï¼5ï¼ ã
39.å å¼å解ä¸ååå¼ï¼
(1)3ax2ï¼6axï¼ ã
(2)x(xï¼2)ï¼xï¼ ã
(3)x2ï¼4xï¼axï¼4aï¼ ã
(4)25x2ï¼49ï¼ ã
(5)36x2ï¼60xï¼25ï¼ ã
(6)4x2ï¼12xï¼9ï¼ ã
(7)x2ï¼9xï¼18ï¼ ã
(8)2x2ï¼5xï¼3ï¼ ã
(9)12x2ï¼50xï¼8ï¼ ã
40.å å¼å解(xï¼2)(xï¼3)ï¼(xï¼2)(xï¼4)ï¼ ã
41.å å¼å解2ax2ï¼3xï¼2axï¼3ï¼ ã
42.å å¼å解9x2ï¼66xï¼121ï¼ ã
43.å å¼å解8ï¼2x2ï¼ ã
44.å å¼å解x2ï¼xï¼14 ï¼ ã
45.å å¼å解9x2ï¼30xï¼25ï¼ ã
46.å å¼å解ï¼20x2ï¼9xï¼20ï¼ ã
47.å å¼å解12x2ï¼29xï¼15ï¼ ã
48.å å¼å解36x2ï¼39xï¼9ï¼ ã
49.å å¼å解21x2ï¼31xï¼22ï¼ ã
50.å å¼å解9x4ï¼35x2ï¼4ï¼ ã
51.å å¼å解(2xï¼1)(xï¼1)ï¼(2xï¼1)(xï¼3)ï¼ ã
52.å å¼å解2ax2ï¼3xï¼2axï¼3ï¼ ã
53.å å¼å解x(yï¼2)ï¼xï¼yï¼1ï¼ ã
54.å å¼å解(x2ï¼3x)ï¼(xï¼3)2ï¼ ã
55.å å¼å解9x2ï¼66xï¼121ï¼ ã
56.å å¼å解8ï¼2x2ï¼ ã
57.å å¼å解x4ï¼1ï¼ ã
58.å å¼å解x2ï¼4xï¼xyï¼2yï¼4ï¼ ã
59.å å¼å解4x2ï¼12xï¼5ï¼ ã
60.å å¼å解21x2ï¼31xï¼22ï¼ ã
61.å å¼å解4x2ï¼4xyï¼y2ï¼4xï¼2yï¼3ï¼ ã
62.å å¼å解9x5ï¼35x3ï¼4xï¼ ã
63.å å¼å解ä¸ååå¼ï¼
(1)3x2ï¼6xï¼ ã
(2)49x2ï¼25ï¼ ã
(3)6x2ï¼13xï¼5ï¼ ã
(4)x2ï¼2ï¼3xï¼ ã
(5)12x2ï¼23xï¼24ï¼ ã
(6)(xï¼6)(xï¼6)ï¼(xï¼6)ï¼ ã
(7)3(xï¼2)(xï¼5)ï¼(xï¼2)(xï¼3)ï¼ ã
(8)9x2ï¼42xï¼49ï¼ ã
64.9x2ï¼30xï¼kå¯å为å®å
¨å¹³æ¹å¼(3xï¼a)2ï¼åkï¼ aï¼ ã
65.è¥x2ï¼mxï¼15å¯å解为(xï¼n)(xï¼3)ï¼mãnç为æ´æ°ï¼åmï¼ nï¼ ã
66.æ±ä¸ååå¼çåæå·®æ积æåã
(1)(6512 )2ï¼(3412 )2ï¼ ã
(2)(7913 )2ï¼2Ã7913 Ã23 ï¼49 ï¼ ã
(3)1998Ã0.48ï¼798Ã0.48ï¼798Ã0.52ï¼1998Ã0.52ï¼ ã
67.å å¼å解ä¸ååå¼ï¼
(1)(xï¼2)ï¼2(xï¼2)2ï¼ ã
(2)36x2ï¼39xï¼9ï¼ ã
(3)2x2ï¼axï¼6xï¼3aï¼ ã
(4)22x2ï¼31xï¼21ï¼ ã
68.å©ç¨å¹³æ¹å·®ï¼åçå¹³æ¹æå·®çå¹³æ¹å
¬å¼ï¼å¡«å¡«ç
(1)49x2ï¼1ï¼ï¼ ï¼1ï¼ï¼ ï¼1ï¼
(2)x2ï¼26xï¼ ï¼ï¼xï¼ ï¼2
(3)x2ï¼20xï¼ ï¼ï¼xï¼ ï¼2
(4)25x2ï¼49y2ï¼ï¼5xï¼ ï¼ï¼5xï¼ ï¼
(5) ï¼66xï¼121ï¼ï¼ ï¼11ï¼2
69.å©ç¨å
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(1)æ±5992ï¼4992ï¼ (2)æ±(7512 )2ï¼(2412 )2ï¼
(3)æ±392ï¼39Ã22ï¼112ï¼ (4)æ±172ï¼34Ã5ï¼52ï¼
(5)è¥2xï¼5yï¼13 ï¼7 ï¼xï¼4yï¼7 ï¼13 æ±2x2ï¼3xyï¼20y2ï¼
70.å å¼å解3ax2ï¼6axï¼ ã
71.å å¼å解(xï¼1)xï¼5xï¼ ã
72.å å¼å解(2xï¼1)(xï¼3)ï¼(2xï¼1)(xï¼5)ï¼
73.å å¼å解xyï¼2xï¼5yï¼10ï¼
74.å å¼å解x2y2ï¼x2ï¼y2ï¼6xyï¼4ï¼ ã
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1.å å¼å解x3ï¼2x2ï¼2xï¼1
2.å å¼å解a2b2ï¼a2ï¼b2ï¼1
3.è¯ç¨é¤æ³å¤å«15x2ï¼xï¼6æ¯ä¸æ¯3xï¼2çåå¼ã
4.(1)å¤å«3xï¼2æ¯ä¸æ¯6x2ï¼xï¼2çå å¼ï¼ï¼ååºè®¡ç®å¼ï¼
(2)å¦ææ¯ï¼è¯·å å¼å解6x2ï¼xï¼2ã
5.aï¼19912 ï¼bï¼9912 ï¼(1)æ±a2ï¼2abï¼b2ä¹å¼ï¼ (2)a2ï¼b2ä¹å¼ï¼
6.å¤å«2xï¼1æ¯å¦4x2ï¼8xï¼3çå å¼ï¼å¦ææ¯ï¼è¯·å å¼å解4x2ï¼8xï¼3ã
7.å å¼å解(1)3ax2ï¼2xï¼3axï¼2 (2)(x2ï¼3x)ï¼(xï¼3)2ï¼2xï¼6ã
8.设6x2ï¼13xï¼k为3xï¼2çåå¼ï¼æ±kä¹å¼ã
9.å¤å«3xæ¯ä¸æ¯x2ä¹å å¼ï¼ï¼è¦è¯´æçç±ï¼
10.è¥-2x2ï¼axï¼12ï¼è½è¢«2xï¼3æ´é¤ï¼æ± (1)aï¼ï¼ (2)å°-2x2ï¼axï¼12å å¼å解ã
11.(1)å å¼å解abï¼cdï¼adï¼bc
(2)å©ç¨(1)æ±1990Ã29ï¼1991Ã71ï¼1990Ã71ï¼29Ã1991çå¼ã
12.å©ç¨å¹³æ¹å·®å
¬å¼æ±1992ï¼992ï¼ï¼
13.å©ç¨ä¹æ³å
¬å¼æ±(6712 )2ï¼(3212 )2ï¼ï¼
14.å å¼å解ä¸ååå¼ï¼
(1)(2xï¼3)(xï¼2)ï¼(xï¼1)(2xï¼3) (2)9x2ï¼66xï¼121
15.请åå¦ç¨æ¾ç»å¦è¿çåç§ä¸åå å¼å解çæ¹æ³å å¼å解16x2ï¼24xï¼9
(1)æ¹æ³1: (2)æ¹æ³2:
16.å å¼å解ä¸ååå¼ï¼
(1)4x2ï¼25 (2)x2ï¼4xyï¼4y2 (3)å©ç¨(1)(2)ä¹æ¹æ³æ±a2ï¼b2ï¼2bcï¼c2
17.å å¼å解
(1)8x2ï¼18 (2)x2ï¼(aï¼b)xï¼ab
18.å å¼å解ä¸ååå¼
(1)9x4ï¼35x2ï¼4 (2)x2ï¼y2ï¼2yzï¼z2
(3)a(b2ï¼c2)ï¼c(a2ï¼b2)
19.å å¼å解(2xï¼1)(xï¼1)ï¼(2xï¼1)(xï¼3)
20.å å¼å解39x2ï¼38xï¼8
21.å©ç¨å å¼å解æ±(6512 )2ï¼(3412 )2ä¹å¼
22.å å¼å解a(b2ï¼c2)ï¼c(a2ï¼b2)
23.aãbãcæ¯æ´æ°ï¼è¥a2ï¼b2ï¼c2ï¼4aï¼8bï¼14cï¼69ï¼0ï¼æ±aï¼2bï¼3cçå¼
24.å å¼å解7(xï¼1)2ï¼4(xï¼1)(yï¼2)ï¼20(y+2)2
25.å å¼å解xy2ï¼2xyï¼3xï¼y2ï¼2yï¼1
26.å å¼å解4x2ï¼6axï¼18a2
27.å å¼å解20a3bcï¼9a2b2cï¼20ab3c
28.å å¼å解2ax2ï¼5xï¼2axï¼5
29.å å¼å解4x3ï¼4x2ï¼25xï¼25
30.å å¼å解(1ï¼xy)2ï¼(yï¼x)2
31.å å¼å解
(1)mx2ï¼m2ï¼xï¼1 (2)a2ï¼2abï¼b2ï¼1
32.å å¼å解ä¸ååå¼
(1)5x2ï¼45 (2)81x3ï¼9x (3)x2ï¼y2ï¼5xï¼5y (4)x2ï¼y2ï¼2yzï¼z2
33.å å¼å解ï¼xy2ï¼2xyï¼3xï¼y2ï¼2yï¼1
34.å å¼å解y2(xï¼y)ï¼z2(yï¼x)
35.设xï¼1æ¯2x2ï¼axï¼3çå å¼ï¼(1)æ±aï¼ï¼ (2)æ±2x2ï¼axï¼3ï¼0ä¹äºæ ¹
36.(1)å å¼å解x2ï¼xï¼y2ï¼yï¼2xyï¼ï¼
(2)æ¿(1)è¥xï¼yï¼99æ±x2ï¼xï¼y2ï¼yï¼2xyä¹å¼ï¼
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