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.docx

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八年级数学上册完全平方公式138.docx

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)

 

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