八年级数学上册完全平方公式138.docx
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八年级数学上册完全平方公式138
(y-5)262×58
(-a-6)2(-3a+4b)(-3a-4b)
(x-4y)2(a+b)(a-b)
1
(y+—)2(x+y)(-x+y)
2
46
(—x+—)2(x+3)(x-3)+(2x-9)(2x-7)
35
(4x+3y-9)(4x-3y+9)(x+10)(x-10)
(3a+b-6)2(t+3)(t-3)
(x+2y+z)(x-2y-z)(7x+3y)(7x-3y)
(-3x+2y)(-3x-2y)(a+7)(a-7)-(a+4)(a-1)
(x+6)291×89
(a+7)2(8a+b)(8a-b)
(6x-2y)2(9+5b)(9-5b)
1
(y-—)2(x+y)(-x+y)
8
21
(—x-—y)2(8a+9)(8a-9)-(3a-4)(4a-5)
33
(4x+3y-8)(4x-3y+8)(c+8)(c-8)
(3a-b+4)2(3t+6)(3t-6)
(3x+3y+1)(3x-3y-1)(x+y)(x-y)
(-x+y)(-x-y)(b+9)(b-9)+(b+1)(b-1)
(c-10)2901×899
(-7b+3)2(6a+1)(6a-1)
(x+y)2(1+b)(1-b)
1
(y+—)2(3x+y)(-3x+y)
7
21
(—x-—)2(x+6)(x-6)+(4x-2)(4x-2)
35
(2x+3y-2)(2x-3y+2)(y+7)(y-7)
(a-b+2)2(4b+5)(4b-5)
(x+3y+z)(x-3y-z)(5x+8y)(5x-8y)
(-8x+y)(-8x-y)(s+5)(s-5)+(s+7)(s+7)
(a+3)251×49
(6s-6)2(-3a+7)(-3a-7)
(-8x+2y)2(a+7b)(a-7b)
1
(y+—)2(2x+4y)(-2x+4y)
2
42
(—x+—y)2(c+2)(c-2)+(4c+7)(4c-7)
53
(x+y-9)(x-y+9)(y+2)(y-2)
(a+b-7)2(y+7)(y-7)
(2x+y+2)(2x-y-2)(6x+y)(6x-y)
(2x+y)(2x-y)(x+5)(x-5)+(x+6)(x-6)
(a+1)235×25
(t+6)2(5a+7)(5a-7)
(3x+3y)2(6+7b)(6-7b)
1
(y+—)2(1+y)(-1+y)
2
13
(—x-—y)2(7b+2)(7b-2)-(2b+7)(4b-3)
52
(6x+3y-7)(6x-3y+7)(b+10)(b-10)
(a+b+c)2(5y+8)(5y-8)
(x+y+1)(x-y-1)(x+y)(x-y)
(-x+y)(-x-y)(s+8)(s-8)+(s-5)(s+6)
(x-2)285×75
(9s+1)2(-9a+5)(-9a-5)
(-x+y)2(5+b)(5-b)
1
(y-—)2(6+3y)(-6+3y)
2
41
(—x-—y)2(5y+2)(5y-2)+(4y+8)(3y+8)
32
(2x+2y-3)(2x-2y+3)(x+10)(x-10)
(a-b+c)2(3b+1)(3b-1)
(x+y+1)(x-y-1)(x+y)(x-y)
(x+8y)(x-8y)(y+8)(y-8)+(y-7)(y+2)
(y+5)275×65
(-s-10)2(-4a+4b)(-4a-4b)
(x-y)2(5a+b)(5a-b)
1
(y-—)2(2+y)(-2+y)
6
41
(—x-—y)2(4a+4)(4a-4)-(3a-10)(3a-3)
55
(3x+2y-6)(3x-2y+6)(b+8)(b-8)
(3a-2b+c)2(y+10)(y-10)
(x+3y+4)(x-3y-4)(x+y)(x-y)
(2x+4y)(2x-4y)(b+10)(b-10)-(b+7)(b-9)
(c-6)264×56
(-a+4)2(-7a+8)(-7a-8)
(x+2y)2(8a+b)(8a-b)
1
(y+—)2(3+3y)(-3+3y)
5
65
(—x-—)2(9y+1)(9y-1)-(2y-5)(4y-1)
54
(6x+y-1)(6x-y+1)(s+5)(s-5)
(a-2b-6)2(3b+8)(3b-8)
(x+2y+z)(x-2y-z)(x+y)(x-y)
(9x+y)(9x-y)(a+4)(a-4)+(a+5)(a-4)
(s-6)2802×798
(a-3)2(-5a+8b)(-5a-8b)
(-2x-2y)2(7a+7b)(7a-7b)
1
(y+—)2(6+y)(-6+y)
2
63
(—x+—y)2(2a+3)(2a-3)+(2a-3)(2a+3)
52
(x+y-4)(x-y+4)(s+7)(s-7)
(2a-b-c)2(y+5)(y-5)
(x+3y+z)(x-3y-z)(x+2y)(x-2y)
(-5x+y)(-5x-y)(y+6)(y-6)+(y+7)(y-8)
(x-6)2805×795
(9x+1)2(-a+3)(-a-3)
(-2x+2y)2(2+b)(2-b)
1
(y-—)2(x+8y)(-x+8y)
6
34
(—x-—y)2(x+5)(x-5)+(4x+2)(3x+3)
45
(x+y-3)(x-y+3)(t+9)(t-9)
(2a+2b-c)2(x+2)(x-2)
(x+y+4)(x-y-4)(x+y)(x-y)
(-2x+y)(-2x-y)(a+8)(a-8)+(a-8)(a+2)