人教版八年级数学上册乘法公式综合练习题精选14.docx

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人教版八年级数学上册乘法公式综合练习题精选14.docx

人教版八年级数学上册乘法公式综合练习题精选14

(b+4)(b-4)92×88

(t+1)(t-1)(a+1)(a-1)

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

(-8x+9y)(-8x-9y)(2+3y)(-2+3y)

(y+7)(y-7)+(y-5)(y-1)(8x+10)(8x-10)+(2x-5)(4x+5)

(t+3)(t-3)903×897

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

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

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

(s+8)(s-8)-(s-4)(s-9)(t+2)(t-2)-(3t+9)(2t+9)

(y+4)(y-4)44×36

(2y+5)(2y-5)(4a+9)(4a-9)

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

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

(c+3)(c-3)-(c-1)(c-1)(8s+6)(8s-6)+(4s+7)(2s-5)

(t+5)(t-5)505×495

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

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

(7x+2y)(7x-2y)(9x+y)(-9x+y)

(x+3)(x-3)+(x-2)(x+2)(4a+4)(4a-4)-(2a-6)(4a+2)

(t+1)(t-1)41×39

(2b+7)(2b-7)(-a+b)(-a-b)

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

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

(a+4)(a-4)-(a+8)(a+1)(3c+3)(3c-3)+(2c+2)(3c+3)

(s+1)(s-1)94×86

(s+5)(s-5)(-9a+5b)(-9a-5b)

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

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

(b+2)(b-2)-(b+5)(b-7)(s+3)(s-3)-(3s-2)(3s-8)

(a+9)(a-9)53×47

(2c+6)(2c-6)(-9a+5)(-9a-5)

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

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

(a+8)(a-8)+(a+3)(a+1)(6t+5)(6t-5)+(4t-2)(2t-8)

(s+9)(s-9)51×49

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

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

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

(y+9)(y-9)-(y+1)(y-9)(c+9)(c-9)-(3c-10)(2c-9)

(a+2)(a-2)95×85

(5c+8)(5c-8)(3a+8)(3a-8)

(5x+7y)(5x-7y)(4+b)(4-b)

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

(x+7)(x-7)+(x+6)(x-1)(s+6)(s-6)-(3s-7)(4s-9)

(b+10)(b-10)92×88

(6a+8)(6a-8)(-a+5)(-a-5)

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

(-9x+7y)(-9x-7y)(9+2y)(-9+2y)

(s+4)(s-4)-(s+3)(s-7)(t+9)(t-9)+(2t-5)(2t+3)

(y+2)(y-2)704×696

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

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

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

(s+2)(s-2)+(s+2)(s+7)(10y+5)(10y-5)-(3y+9)(3y-1)

(x+2)(x-2)34×26

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

(x+4y)(x-4y)(1+7b)(1-7b)

(4x+9y)(4x-9y)(1+y)(-1+y)

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

(b+3)(b-3)73×67

(8x+4)(8x-4)(-a+1)(-a-1)

(8x+3y)(8x-3y)(7a+4b)(7a-4b)

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

(a+4)(a-4)-(a-1)(a-1)(2s+10)(2s-10)-(4s+3)(4s-8)

(a+10)(a-10)301×299

(y+5)(y-5)(-a+4)(-a-4)

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

(4x+2y)(4x-2y)(5+7y)(-5+7y)

(a+10)(a-10)+(a-9)(a-6)(6b+8)(6b-8)-(4b+5)(4b-6)

(y+9)(y-9)703×697

(9t+5)(9t-5)(-3a+b)(-3a-b)

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

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

(s+8)(s-8)-(s-6)(s+8)(2x+6)(2x-6)-(3x-8)(4x-10)

(y+6)(y-6)81×79

(c+3)(c-3)(4a+2)(4a-2)

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

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

(x+1)(x-1)+(x+2)(x-5)(t+5)(t-5)+(3t-7)(3t+3)

(t+6)(t-6)104×96

(5x+1)(5x-1)(-a+4)(-a-4)

(2x+9y)(2x-9y)(6+5b)(6-5b)

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

(y+8)(y-8)+(y+6)(y-5)(5a+6)(5a-6)-(2a+9)(4a+2)

(c+8)(c-8)45×35

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

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

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

(b+5)(b-5)-(b+3)(b-1)(7c+1)(7c-1)+(3c-2)(4c+8)

(s+7)(s-7)601×599

(5x+7)(5x-7)(-7a+3b)(-7a-3b)

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

(9x+8y)(9x-8y)(3+2y)(-3+2y)

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

(t+7)(t-7)605×595

(6x+5)(6x-5)(3a+4b)(3a-4b)

(3x+y)(3x-y)(5a+8b)(5a-8b)

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

(s+4)(s-4)+(s+3)(s+8)(s+9)(s-9)-(3s-6)(3s-6)

(y+6)(y-6)34×26

(5b+3)(5b-3)(7a+5)(7a-5)

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

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

(x+3)(x-3)-(x-1)(x-4)(8s+1)(8s-1)+(4s-7)(4s-8)

(b+2)(b-2)105×95

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

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

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

(a+8)(a-8)+(a+2)(a-1)(2b+6)(2b-6)+(3b+5)(3b-6)

(y+2)(y-2)42×38

(2t+1)(2t-1)(-a+b)(-a-b)

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

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

(c+1)(c-1)+(c+4)(c+2)(9y+1)(9y-1)-(3y+2)(4y+6)

(c+1)(c-1)605×595

(8b+1)(8b-1)(-a+1)(-a-1)

(4x+7y)(4x-7y)(5+8b)(5-8b)

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

(c+4)(c-4)+(c+1)(c-6)(x+4)(x-4)+(4x-2)(3x+7)

(x+6)(x-6)801×799

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

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

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

(b+10)(b-10)-(b+6)(b-2)(t+2)(t-2)-(4t-1)(3t+1)

(c+8)(c-8)34×26

(3s+1)(3s-1)(-a+b)(-a-b)

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

(-5x+y)(-5x-y)(2x+8y)(-2x+8y)

(a+4)(a-4)+(a+3)(a+8)(a+1)(a-1)+(2a-2)(4a-5)

(b+3)(b-3)91×89

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

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

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

(c+9)(c-9)+(c-8)(c+4)(s+10)(s-10)+(3s-8)(2s-1)

(a+4)(a-4)401×399

(x+1)(x-1)(-8a+9)(-8a-9)

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

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

(s+10)(s-10)+(s-3)(s+6)(10x+1)(10x-1)+(3x-7)(3x+8)

(x+7)(x-7)505×495

(9t+3)(9t-3)(5a+2b)(5a-2b)

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

(2x+y)(2x-y)(8x+y)(-8x+y)

(a+7)(a-7)+(a+1)(a+6)(x+9)(x-9)+(2x+4)(3x+4)

(b+5)(b-5)105×95

(2x+1)(2x-1)(-a+8b)(-a-8b)

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

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

(y+9)(y-9)+(y-1)(y-6)(y+2)(y-2)-(3y-10)(4y+10)

(c+1)(c-1)61×59

(s+2)(s-2)(-a+1)(-a-1)

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

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

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

(a+9)(a-9)91×89

(b+7)(b-7)(-3a+2b)(-3a-2b)

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

(6x+y)(6x-y)(x+5y)(-x+5y)

(x+1)(x-1)+(x+1)(x+8)(c+10)(c-10)+(4c-4)(4c+2)

(x+2)(x-2)33×27

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

(3x+6y)(3x-6y)(4+b)(4-b)

(2x+7y)(2x-7y)(6x+y)(-6x+y)

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

(y+4)(y-4)33×27

(s+4)(s-4)(6a+8)(6a-8)

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

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

(c+10)(c-10)-(c+3)(c+9)(b+6)(b-6)-(4b-10)(4b+8)

(c+2)(c-2)32×28

(8y+6)(8y-6)(-a+5)(-a-5)

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

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

(a+7)(a-7)+(a-1)(a+1)(t+8)(t-8)-(4t+1)(3t+3)

(b+10)(b-10)82×78

(a+6)(a-6)(-7a+8)(-7a-8)

(x+8y)(x-8y)(4a+2b)(4a-2b)

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

(t+5)(t-5)+(t-7)(t+9)(t+8)(t-8)+(4t+5)(3t+9)

(y+8)(y-8)503×497

(c+5)(c-5)(a+b)(a-b)

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

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

(t+6)(t-6)+(t-5)(t-6)(7s+9)(7s-9)+(4s-5)(2s+8)

(b+4)(b-4)104×96

(s+1)(s-1)(-a+3)(-a-3)

(5x+y)(5x-y)(7+4b)(7-4b)

(9x+6y)(9x-6y)(3x+3y)(-3x+3y)

(a+3)(a-3)+(a-9)(a-2)(c+9)(c-9)+(4c-2)(3c-8)

(c+1)(c-1)74×66

(3b+7)(3b-7)(-2a+7b)(-2a-7b)

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

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

(x+7)(x-7)+(x+7)(x-3)(9a+6)(9a-6)+(2a+4)(2a-3)

(t+3)(t-3)904×896

(s+8)(s-8)(a+4)(a-4)

(5x+6y)(5x-6y)(7+b)(7-b)

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

(x+5)(x-5)+(x-3)(x+8)(a+6)(a-6)+(3a-5)(3a+10)

(t+9)(t-9)74×66

(b+9)(b-9)(-2a+4)(-2a-4)

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

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

(c+6)(c-6)-(c+8)(c+1)(a+5)(a-5)-(4a+3)(2a+8)

(t+10)(t-10)302×298

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

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

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

(t+6)(t-6)+(t-6)(t-3)(4y+5)(4y-5)-(2y+4)(3y-1)

(s+8)(s-8)71×69

(c+4)(c-4)(7a+2b)(7a-2b)

(8x+2y)(8x-2y)(5a+2b)(5a-2b)

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

(b+6)(b-6)+(b+8)(b+6)(s+7)(s-7)-(4s+1)(2s-10)

(x+10)(x-10)64×56

(4a+4)(4a-4)(5a+8)(5a-8)

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

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

(b+3)(b-3)-(b-7)(b+1)(6s+3)(6s-3)+(3s+10)(4s-6)

(a+7)(a-7)74×66

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

(6x+y)(6x-y)(5a+b)(5a-b)

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

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

(b+9)(b-9)85×75

(9c+1)(9c-1)(-3a+8)(-3a-8)

(9x+6y)(9x-6y)(10+b)(10-b)

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

(s+10)(s-10)-(s+1)(s+9)(c+8)(c-8)+(2c-1)(3c+3)

(y+8)(y-8)71×69

(s+1)(s-1)(9a+b)(9a-b)

(8x+6y)(8x-6y)(3a+5b)(3a-5b)

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

(x+8)(x-8)+(x+3)(x-1)(x+5)(x-5)-(4x-5)(2x-7)

(y+8)(y-8)805×795

(x+2)(x-2)(a+3)(a-3)

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

(-x+2y)(-x-2y)(8+7y)(-8+7y)

(b+1)(b-1)+(b-3)(b-9)(2y+10)(2y-10)-(2y-4)(2y+2)

(y+5)(y-5)703×697

(a+5)(a-5)(8a+9)(8a-9)

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

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

(t+1)(t-1)+(t+3)(t-3)(y+7)(y-7)+(2y-6)(4y+7)

(s+2)(s-2)605×595

(5a+2)(5a-2)(-a+b)(-a-b)

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

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

(b+1)(b-1)-(b+2)(b+7)(3b+10)(3b-10)+(3b-2)(2b+4)

(a+6)(a-6)905×895

(8x+1)(8x-1)(9a+8b)(9a-8b)

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

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

(y+5)(y-5)+(y+5)(y-6)(y+9)(y-9)-(4y+9)(3y+3)

(b+7)(b-7)105×95

(y+3)(y-3)(a+1)(a-1)

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

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

(t+5)(t-5)+(t+1)(t+9)(a+3)(a-3)+(4a-6)(4a-4)

(b+3)(b-3)902×898

(2b+2)(2b-2)(7a+b)(7a-b)

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

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

(x+3)(x-3)-(x+9)(x-4)(4x+5)(4x-5)-(3x-2)(4x+8)

(t+6)(t-6)801×799

(2t+3)(2t-3)(8a+8b)(8a-8b)

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

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

(s+8)(s-8)-(s-7)(s-2)(4y+4)(4y-4)+(3y-2)(3y+10)

(s+8)(s-8)705×695

(8b+1)(8b-1)(a+9b)(a-9b)

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

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

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

(s+5)(s-5)704×696

(8x+6)(8x-6)(-a+3)(-a-3)

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

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

(x+1)(x-1)-(x+1)(x+1)(7c+7)(7c-7)-(2c+3)(2c-9)

(a+9)(a-9)603×597

(3b+4)(3b-4)(-5a+4b)(-5a-4b)

(3x+3y)(3x-3y)(8+4b)(8-4b)

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

(y+5)(y-5)-(y+4)(y+1)(a+10)(a-10)-(2a+10)(4a+4)

(t+3)(t-3)

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