人教版八年级数学上册乘法公式综合练习题精选89Word格式文档下载.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89Word格式文档下载.docx

296

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

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

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

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

(a+10)(a-10)203×

197

(t+4)(t-4)(a+8b)(a-8b)

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

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

(s+9)(s-9)-(s+8)(s+4)(5b+8)(5b-8)-(3b+7)(3b-4)

(x+8)(x-8)405×

395

(2c+3)(2c-3)(5a+b)(5a-b)

(x+3y)(x-3y)(10+b)(10-b)

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

(s+3)(s-3)-(s+8)(s+1)(7a+8)(7a-8)-(2a-1)(3a-3)

(a+5)(a-5)805×

795

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

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

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

(x+5)(x-5)+(x-1)(x-8)(s+8)(s-8)-(2s-7)(2s+10)

(t+8)(t-8)55×

45

(6s+7)(6s-7)(-a+4)(-a-4)

(6x+4y)(6x-4y)(1+b)(1-b)

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

(b+9)(b-9)-(b-5)(b-8)(6a+8)(6a-8)-(3a+8)(3a+8)

(x+9)(x-9)32×

28

(4t+7)(4t-7)(-a+4)(-a-4)

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

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

(c+7)(c-7)-(c+7)(c-2)(t+5)(t-5)+(3t+3)(4t+1)

(s+8)(s-8)55×

(s+7)(s-7)(-9a+8)(-9a-8)

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

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

(c+2)(c-2)+(c+6)(c+9)(7y+1)(7y-1)+(4y-10)(3y+8)

(t+2)(t-2)61×

59

(4y+8)(4y-8)(2a+5b)(2a-5b)

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

(x+7y)(x-7y)(5+3y)(-5+3y)

(s+5)(s-5)+(s-1)(s-2)(6y+8)(6y-8)-(2y+1)(3y-3)

(c+2)(c-2)305×

295

(2x+3)(2x-3)(-7a+6b)(-7a-6b)

(4x+6y)(4x-6y)(4+5b)(4-5b)

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

(y+5)(y-5)+(y+8)(y-5)(2b+10)(2b-10)+(3b+9)(3b+6)

(t+9)(t-9)401×

399

(c+3)(c-3)(-4a+6b)(-4a-6b)

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

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

(b+6)(b-6)+(b+1)(b+1)(t+5)(t-5)+(3t+5)(2t-2)

(a+7)(a-7)31×

29

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

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

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

(t+8)(t-8)-(t+2)(t+7)(c+1)(c-1)-(3c+10)(2c+9)

(a+7)(a-7)603×

597

(y+9)(y-9)(-3a+2b)(-3a-2b)

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

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

(s+3)(s-3)-(s+6)(s-7)(c+1)(c-1)+(2c-10)(4c-9)

(y+5)(y-5)91×

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

(7x+4y)(7x-4y)(3+6b)(3-6b)

(7x+y)(7x-y)(6x+8y)(-6x+8y)

(b+7)(b-7)+(b-3)(b+7)(2y+10)(2y-10)-(3y-9)(2y+9)

(y+9)(y-9)93×

87

(9b+3)(9b-3)(-6a+6b)(-6a-6b)

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

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

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

(x+3)(x-3)704×

696

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

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

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

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

(y+3)(y-3)93×

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

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

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

(x+6)(x-6)+(x+5)(x+9)(a+7)(a-7)-(4a+8)(4a+5)

(t+5)(t-5)83×

77

(s+7)(s-7)(a+b)(a-b)

(6x+y)(6x-y)(1+3b)(1-3b)

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

(t+2)(t-2)+(t-6)(t+9)(a+1)(a-1)-(2a+8)(4a-10)

(x+10)(x-10)81×

79

(x+10)(x-10)(a+4)(a-4)

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

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

(s+8)(s-8)+(s-6)(s+7)(8s+10)(8s-10)+(2s+5)(2s-5)

(a+5)(a-5)75×

65

(4t+10)(4t-10)(2a+8b)(2a-8b)

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

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

(s+2)(s-2)+(s-4)(s-4)(b+8)(b-8)+(4b+5)(3b-10)

(y+5)(y-5)501×

499

(c+4)(c-4)(-4a+5)(-4a-5)

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

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

(b+10)(b-10)-(b+8)(b+9)(3c+4)(3c-4)-(2c+4)(2c+3)

(s+10)(s-10)72×

68

(t+10)(t-10)(-a+2)(-a-2)

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

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

(b+7)(b-7)+(b+9)(b+4)(9s+1)(9s-1)+(2s+3)(3s+8)

(s+5)(s-5)704×

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

(x+4y)(x-4y)(9a+8b)(9a-8b)

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

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

(a+7)(a-7)53×

47

(8c+2)(8c-2)(a+5)(a-5)

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

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

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

(c+3)(c-3)305×

(9a+6)(9a-6)(-9a+4)(-9a-4)

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

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

(c+3)(c-3)+(c-8)(c+1)(2x+5)(2x-5)+(3x+5)(2x-8)

(a+7)(a-7)105×

95

(6c+9)(6c-9)(-9a+3b)(-9a-3b)

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

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

(c+1)(c-1)+(c-6)(c+9)(a+10)(a-10)-(3a+7)(3a-10)

(y+8)(y-8)93×

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

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

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

(c+7)(c-7)52×

48

(6y+7)(6y-7)(-3a+8)(-3a-8)

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

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

(a+4)(a-4)+(a+5)(a-5)(5s+1)(5s-1)-(4s-8)(3s+9)

(c+5)(c-5)803×

797

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

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

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

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

(b+6)(b-6)802×

798

(3t+6)(3t-6)(-a+4b)(-a-4b)

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

(7x+5y)(7x-5y)(9x+3y)(-9x+3y)

(c+5)(c-5)+(c+6)(c+6)(y+7)(y-7)-(3y+1)(3y+7)

(y+5)(y-5)201×

199

(7t+5)(7t-5)(-3a+2)(-3a-2)

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

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

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

(b+1)(b-1)304×

(c+2)(c-2)(a+8)(a-8)

(9x+y)(9x-y)(5a+8b)(5a-8b)

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

(y+2)(y-2)+(y-5)(y-4)(4b+4)(4b-4)-(2b-5)(4b-10)

(b+2)(b-2)603×

(c+7)(c-7)(a+7)(a-7)

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

(3x+7y)(3x-7y)(5x+6y)(-5x+6y)

(b+9)(b-9)+(b-6)(b+7)(x+8)(x-8)+(4x+6)(3x+9)

(t+7)(t-7)201×

(3y+9)(3y-9)(-a+2)(-a-2)

(2x+y)(2x-y)(4+6b)(4-6b)

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

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

(s+10)(s-10)305×

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

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

(x+5y)(x-5y)(1+8y)(-1+8y)

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

(y+8)(y-8)903×

897

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

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

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

(t+4)(t-4)-(t+7)(t+6)(b+6)(b-6)-(4b+7)(3b-2)

(b+3)(b-3)504×

496

(x+3)(x-3)(-8a+9)(-8a-9)

(3x+3y)(3x-3y)(9+7b)(9-7b)

(-9x+3y)(-9x-3y)(7+y)(-7+y)

(y+2)(y-2)+(y-2)(y+6)(c+8)(c-8)-(3c+9)(3c-4)

(t+8)(t-8)85×

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

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

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

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

(s+3)(s-3)604×

596

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

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

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

(s+5)(s-5)+(s-8)(s+2)(9b+7)(9b-7)-(2b+5)(2b+4)

(s+6)(s-6)202×

198

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

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

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

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

(y+2)(y-2)91×

(a+1)(a-1)(-a+6)(-a-6)

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

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

(a+7)(a-7)-(a-5)(a+5)(9a+5)(9a-5)+(4a-1)(4a-3)

(b+8)(b-8)42×

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

(x+4y)(x-4y)(2+3b)(2-3b)

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

(b+10)(b-10)-(b+9)(b+4)(6t+7)(6t-7)-(4t-7)(4t+4)

(c+9)(c-9)65×

55

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

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

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

(y+9)(y-9)+(y-4)(y-5)(s+7)(s-7)+(4s-10)(3s-5)

(a+1)(a-1)505×

495

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

(3x+7y)(3x-7y)(10+b)(10-b)

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

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

(t+3)(t-3)43×

37

(7s+5)(7s-5)(-a+2b)(-a-2b)

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

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

(y+9)(y-9)+(y-5)(y-6)(8b+1)(8b-1)-(2b+4)(2b+9)

(b+3)(b-3)703×

697

(s+9)(s-9)(3a+9)(3a-9)

(x+8y)(x-8y)(1+y)(-1+y)

(a+7)(a-7)-(a-6)(a-3)(y+3)(y-3)+(3y-8)(3y+8)

(s+8)(s-8)401×

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

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

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

(b+9)(b-9)-(b-7)(b-5)(3y+5)(3y-5)-(4y-6)(3y-10)

(c+1)(c-1)94×

86

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

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

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

(y+9)(y-9)+(y-3)(y-6)(t+10)(t-10)+(2t-7)(2t+10)

(b+7)(b-7)43×

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

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

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

(a+6)(a-6)-(a+1)(a+1)(a+4)(a-4)+(3a-2)(4a-2)

(t+4)(t-4)81×

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

(9x+5y)(9x-5y)(6a+4b)(6a-4b)

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

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

(b+3)(b-3)55×

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

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

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

(s+7)(s-7)+(s+2)(s+8)(y+9)(y-9)+(2y+10)(2y+4)

(x+2)(x-2)104×

96

(y+8)(y-8)(-a+2)(-a-2)

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

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

(y+5)(y-5)-(y+5)(y+3)(8y+7)(8y-7)+(2y-3)(2y-5)

(c+5)(c-5)93×

(t+6)(t-6)(-a+4)(-a-4)

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

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

(c+6)(c-6)+(c-9)

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