八年级数学上册乘法公式专项146.docx

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八年级数学上册乘法公式专项146.docx

八年级数学上册乘法公式专项146

(c+5)(c-5)104×96

(c+8)(c-8)(-a+5)(-a-5)

(9x+2y)(9x-2y)(10+2b)(10-2b)

(x+6y)(x-6y)(6+6y)(-6+6y)

(x+5)(x-5)-(x+7)(x-4)(9s+1)(9s-1)-(4s+2)(2s+6)

(a+4)(a-4)42×38

(t+1)(t-1)(-9a+7)(-9a-7)

(2x+6y)(2x-6y)(6+b)(6-b)

(-8x+7y)(-8x-7y)(7+5y)(-7+5y)

(a+3)(a-3)+(a-4)(a+6)(6t+9)(6t-9)-(4t+2)(2t+5)

(x+9)(x-9)302×298

(s+4)(s-4)(-a+5b)(-a-5b)

(3x+8y)(3x-8y)(2a+b)(2a-b)

(x+y)(x-y)(x+y)(-x+y)

(s+2)(s-2)+(s+3)(s-4)(10b+7)(10b-7)+(3b-2)(4b-5)

(b+6)(b-6)804×796

(a+9)(a-9)(7a+2)(7a-2)

(9x+y)(9x-y)(7+b)(7-b)

(3x+y)(3x-y)(3x+7y)(-3x+7y)

(t+2)(t-2)-(t+7)(t-7)(x+10)(x-10)-(4x+9)(2x-6)

(t+4)(t-4)75×65

(s+2)(s-2)(a+b)(a-b)

(9x+6y)(9x-6y)(a+b)(a-b)

(-4x+y)(-4x-y)(x+3y)(-x+3y)

(c+7)(c-7)-(c-6)(c-6)(4x+5)(4x-5)+(2x-8)(2x-5)

(y+6)(y-6)81×79

(9s+4)(9s-4)(-4a+b)(-4a-b)

(x+6y)(x-6y)(a+3b)(a-3b)

(-4x+y)(-4x-y)(8x+4y)(-8x+4y)

(c+7)(c-7)-(c+8)(c-6)(9b+4)(9b-4)+(3b-1)(3b-9)

(c+8)(c-8)44×36

(y+5)(y-5)(6a+3)(6a-3)

(x+y)(x-y)(7+b)(7-b)

(7x+2y)(7x-2y)(1+y)(-1+y)

(b+5)(b-5)+(b-7)(b-4)(b+4)(b-4)-(3b+2)(3b-1)

(y+10)(y-10)903×897

(x+2)(x-2)(a+b)(a-b)

(x+4y)(x-4y)(6+9b)(6-9b)

(8x+6y)(8x-6y)(x+y)(-x+y)

(s+10)(s-10)+(s-5)(s+1)(5a+6)(5a-6)+(4a+5)(3a+1)

(b+9)(b-9)502×498

(4t+3)(4t-3)(a+b)(a-b)

(2x+y)(2x-y)(4+b)(4-b)

(x+y)(x-y)(7x+3y)(-7x+3y)

(c+4)(c-4)-(c-2)(c-7)(6c+10)(6c-10)-(4c+8)(3c-5)

(c+5)(c-5)404×396

(s+6)(s-6)(-a+b)(-a-b)

(5x+9y)(5x-9y)(2+2b)(2-2b)

(x+y)(x-y)(x+y)(-x+y)

(c+6)(c-6)-(c-1)(c+9)(s+9)(s-9)+(3s+1)(2s-3)

(c+1)(c-1)102×98

(b+7)(b-7)(-5a+5)(-5a-5)

(x+3y)(x-3y)(a+b)(a-b)

(x+9y)(x-9y)(7+9y)(-7+9y)

(c+5)(c-5)+(c+6)(c-4)(4a+1)(4a-1)-(2a-9)(3a-2)

(x+3)(x-3)502×498

(2y+5)(2y-5)(-a+9)(-a-9)

(9x+9y)(9x-9y)(9+b)(9-b)

(5x+y)(5x-y)(9+4y)(-9+4y)

(b+5)(b-5)-(b+9)(b-7)(8t+4)(8t-4)-(3t-10)(2t+6)

(c+6)(c-6)54×46

(9y+9)(9y-9)(a+1)(a-1)

(2x+y)(2x-y)(a+b)(a-b)

(3x+8y)(3x-8y)(10+5y)(-10+5y)

(c+4)(c-4)-(c-7)(c+6)(2c+5)(2c-5)+(3c+2)(3c+10)

(a+4)(a-4)81×79

(9b+6)(9b-6)(-2a+b)(-2a-b)

(8x+y)(8x-y)(a+b)(a-b)

(x+y)(x-y)(3+y)(-3+y)

(s+3)(s-3)-(s+2)(s+3)(3a+9)(3a-9)-(2a-6)(2a+1)

(a+4)(a-4)44×36

(a+7)(a-7)(a+9)(a-9)

(9x+4y)(9x-4y)(4+3b)(4-3b)

(3x+2y)(3x-2y)(1+y)(-1+y)

(t+6)(t-6)+(t+8)(t-1)(y+2)(y-2)+(3y+3)(2y-3)

(s+6)(s-6)702×698

(t+5)(t-5)(-a+6b)(-a-6b)

(7x+y)(7x-y)(4+2b)(4-2b)

(x+5y)(x-5y)(10+9y)(-10+9y)

(b+10)(b-10)-(b-4)(b-6)(5b+9)(5b-9)+(3b-10)(2b+1)

(s+4)(s-4)92×88

(9y+7)(9y-7)(9a+1)(9a-1)

(6x+y)(6x-y)(8+b)(8-b)

(-x+8y)(-x-8y)(8x+9y)(-8x+9y)

(c+3)(c-3)+(c-4)(c-7)(s+3)(s-3)-(3s-5)(4s-6)

(x+2)(x-2)53×47

(9y+8)(9y-8)(-a+b)(-a-b)

(x+4y)(x-4y)(5+b)(5-b)

(-5x+y)(-5x-y)(9+4y)(-9+4y)

(t+3)(t-3)+(t-9)(t+6)(4y+2)(4y-2)-(3y+4)(4y-9)

(a+10)(a-10)703×697

(s+5)(s-5)(-7a+7)(-7a-7)

(x+6y)(x-6y)(2+b)(2-b)

(6x+4y)(6x-4y)(10+y)(-10+y)

(b+3)(b-3)+(b+7)(b+5)(x+10)(x-10)+(4x+6)(4x+1)

(b+3)(b-3)81×79

(y+6)(y-6)(-7a+6)(-7a-6)

(7x+y)(7x-y)(6+b)(6-b)

(-x+y)(-x-y)(x+y)(-x+y)

(a+10)(a-10)-(a+3)(a-4)(6a+7)(6a-7)+(2a+8)(4a-4)

(y+3)(y-3)803×797

(4b+9)(4b-9)(-a+3)(-a-3)

(x+y)(x-y)(a+5b)(a-5b)

(-x+2y)(-x-2y)(x+7y)(-x+7y)

(x+9)(x-9)+(x-2)(x+9)(5y+1)(5y-1)+(3y-10)(2y+8)

(b+10)(b-10)34×26

(b+4)(b-4)(6a+b)(6a-b)

(4x+y)(4x-y)(3+7b)(3-7b)

(4x+9y)(4x-9y)(7+y)(-7+y)

(s+10)(s-10)-(s+6)(s-6)(s+2)(s-2)+(3s-10)(2s-5)

(a+4)(a-4)53×47

(c+7)(c-7)(3a+4)(3a-4)

(x+7y)(x-7y)(4+8b)(4-8b)

(x+7y)(x-7y)(1+6y)(-1+6y)

(c+5)(c-5)+(c+2)(c+7)(9b+5)(9b-5)-(3b-8)(3b+1)

(x+7)(x-7)34×26

(9y+6)(9y-6)(-a+6b)(-a-6b)

(x+y)(x-y)(a+9b)(a-9b)

(x+y)(x-y)(x+4y)(-x+4y)

(y+3)(y-3)-(y-5)(y-3)(c+6)(c-6)-(3c-9)(2c-6)

(y+6)(y-6)703×697

(7x+5)(7x-5)(-7a+b)(-7a-b)

(5x+y)(5x-y)(9+5b)(9-5b)

(5x+y)(5x-y)(9+3y)(-9+3y)

(t+5)(t-5)+(t-8)(t+9)(10s+2)(10s-2)-(4s+4)(4s+6)

(y+1)(y-1)202×198

(c+10)(c-10)(-4a+3)(-4a-3)

(2x+9y)(2x-9y)(5+b)(5-b)

(-x+8y)(-x-8y)(5x+y)(-5x+y)

(x+7)(x-7)-(x+3)(x+1)(y+1)(y-1)-(4y-9)(2y-5)

(b+6)(b-6)91×89

(9a+4)(9a-4)(-a+3)(-a-3)

(x+6y)(x-6y)(a+b)(a-b)

(-x+y)(-x-y)(x+y)(-x+y)

(t+9)(t-9)+(t-3)(t-3)(3y+3)(3y-3)-(3y+5)(4y+9)

(t+4)(t-4)91×89

(y+1)(y-1)(-a+5)(-a-5)

(2x+y)(2x-y)(1+6b)(1-6b)

(-6x+9y)(-6x-9y)(x+6y)(-x+6y)

(b+1)(b-1)+(b-8)(b-4)(2y+10)(2y-10)+(4y-10)(4y-6)

(s+9)(s-9)505×495

(6y+1)(6y-1)(a+5)(a-5)

(x+y)(x-y)(7+b)(7-b)

(-5x+y)(-5x-y)(x+y)(-x+y)

(a+4)(a-4)-(a+8)(a+7)(6s+7)(6s-7)+(3s+9)(2s-9)

(b+6)(b-6)104×96

(5b+1)(5b-1)(9a+4)(9a-4)

(6x+9y)(6x-9y)(a+7b)(a-7b)

(-x+4y)(-x-4y)(2+5y)(-2+5y)

(x+7)(x-7)+(x+3)(x+9)(7t+3)(7t-3)-(2t+7)(2t-6)

(x+7)(x-7)703×697

(b+10)(b-10)(-a+3)(-a-3)

(5x+y)(5x-y)(a+3b)(a-3b)

(-4x+y)(-4x-y)(9x+y)(-9x+y)

(t+4)(t-4)-(t+3)(t+3)(t+1)(t-1)+(4t+2)(2t+10)

(c+2)(c-2)701×699

(2x+6)(2x-6)(7a+8b)(7a-8b)

(x+y)(x-y)(4+2b)(4-2b)

(2x+5y)(2x-5y)(x+y)(-x+y)

(c+2)(c-2)-(c+8)(c+9)(c+6)(c-6)+(2c-7)(2c-6)

 

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