人教版八年级数学上册乘法公式综合练习题精选81Word文档下载推荐.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81Word文档下载推荐.docx
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78
(t+10)(t-10)(5a+5b)(5a-5b)
(3x+7y)(3x-7y)(1+3b)(1-3b)
(-x+2y)(-x-2y)(8+y)(-8+y)
(t+9)(t-9)-(t-2)(t-1)(y+7)(y-7)-(3y+5)(4y-2)
(b+10)(b-10)603×
597
(6t+3)(6t-3)(9a+b)(9a-b)
(x+y)(x-y)(3a+4b)(3a-4b)
(x+y)(x-y)(7+y)(-7+y)
(t+2)(t-2)+(t-5)(t+7)(6t+2)(6t-2)-(4t-9)(3t+1)
(t+4)(t-4)81×
79
(b+7)(b-7)(-8a+b)(-8a-b)
(x+y)(x-y)(2a+9b)(2a-9b)
(-5x+y)(-5x-y)(9x+2y)(-9x+2y)
(t+1)(t-1)+(t+4)(t+2)(c+1)(c-1)+(2c+10)(4c+3)
(t+9)(t-9)905×
895
(8b+3)(8b-3)(7a+7)(7a-7)
(x+y)(x-y)(a+b)(a-b)
(x+y)(x-y)(5+7y)(-5+7y)
(s+6)(s-6)+(s+3)(s+1)(s+5)(s-5)+(4s-2)(4s+6)
(x+5)(x-5)32×
28
(8b+4)(8b-4)(-9a+5)(-9a-5)
(x+6y)(x-6y)(3a+4b)(3a-4b)
(x+2y)(x-2y)(7x+5y)(-7x+5y)
(x+3)(x-3)+(x+9)(x+8)(6x+4)(6x-4)-(2x-10)(3x+9)
(t+2)(t-2)85×
75
(y+7)(y-7)(a+3b)(a-3b)
(x+3y)(x-3y)(3+9b)(3-9b)
(x+2y)(x-2y)(3+y)(-3+y)
(c+8)(c-8)-(c+3)(c-2)(8a+5)(8a-5)+(4a+7)(2a+2)
(a+6)(a-6)64×
56
(x+9)(x-9)(-2a+3b)(-2a-3b)
(x+7y)(x-7y)(6+b)(6-b)
(9x+y)(9x-y)(4+2y)(-4+2y)
(c+1)(c-1)-(c-2)(c-2)(x+2)(x-2)-(4x-3)(3x+2)
(a+8)(a-8)101×
99
(2a+4)(2a-4)(2a+6b)(2a-6b)
(x+5y)(x-5y)(10+8b)(10-8b)
(x+5y)(x-5y)(4+y)(-4+y)
(c+1)(c-1)+(c-3)(c-8)(x+8)(x-8)-(4x+5)(2x-3)
(a+3)(a-3)501×
(s+3)(s-3)(2a+7)(2a-7)
(3x+2y)(3x-2y)(a+b)(a-b)
(-5x+y)(-5x-y)(5+7y)(-5+7y)
(a+9)(a-9)-(a+3)(a+4)(t+9)(t-9)-(4t-1)(2t+8)
(c+4)(c-4)901×
899
(3t+6)(3t-6)(-2a+3)(-2a-3)
(x+3y)(x-3y)(1+7b)(1-7b)
(9x+y)(9x-y)(x+y)(-x+y)
(y+2)(y-2)-(y-9)(y+9)(y+6)(y-6)+(2y+2)(4y+2)
(b+3)(b-3)202×
198
(x+9)(x-9)(9a+3)(9a-3)
(3x+9y)(3x-9y)(a+5b)(a-5b)
(-x+4y)(-x-4y)(3x+4y)(-3x+4y)
(s+4)(s-4)+(s+8)(s-7)(s+2)(s-2)+(4s+2)(2s-3)
(t+6)(t-6)35×
(5x+3)(5x-3)(a+b)(a-b)
(4x+y)(4x-y)(a+2b)(a-2b)
(-5x+y)(-5x-y)(x+y)(-x+y)
(t+8)(t-8)+(t-1)(t+8)(c+9)(c-9)+(3c+4)(3c-8)
(x+3)(x-3)904×
896
(5c+10)(5c-10)(-a+7)(-a-7)
(4x+y)(4x-y)(1+b)(1-b)
(x+8y)(x-8y)(4+y)(-4+y)
(b+5)(b-5)-(b-2)(b+6)(a+7)(a-7)-(3a-4)(2a+7)
(x+3)(x-3)101×
(t+6)(t-6)(4a+6)(4a-6)
(4x+4y)(4x-4y)(8a+b)(8a-b)
(-x+4y)(-x-4y)(6x+y)(-6x+y)
(s+10)(s-10)+(s-9)(s+5)(c+6)(c-6)+(4c+2)(4c-4)
(c+2)(c-2)303×
297
(y+10)(y-10)(a+7b)(a-7b)
(5x+y)(5x-y)(7a+b)(7a-b)
(-x+y)(-x-y)(6+y)(-6+y)
(a+7)(a-7)-(a+4)(a+8)(10s+1)(10s-1)-(2s+4)(3s-7)
(s+8)(s-8)34×
26
(c+4)(c-4)(-a+b)(-a-b)
(4x+3y)(4x-3y)(4+b)(4-b)
(-7x+y)(-7x-y)(3+y)(-3+y)
(c+1)(c-1)-(c-2)(c+4)(7a+3)(7a-3)+(3a+7)(3a+3)
(t+10)(t-10)904×
(5b+3)(5b-3)(5a+3)(5a-3)
(x+3y)(x-3y)(a+3b)(a-3b)
(8x+8y)(8x-8y)(x+y)(-x+y)
(b+2)(b-2)+(b+4)(b-5)(7s+10)(7s-10)-(3s+6)(4s+7)
(x+3)(x-3)304×
296
(4a+9)(4a-9)(a+7)(a-7)
(x+4y)(x-4y)(8+b)(8-b)
(-x+y)(-x-y)(5+y)(-5+y)
(s+5)(s-5)+(s-4)(s+6)(7c+8)(7c-8)-(4c-6)(3c-9)
(s+3)(s-3)904×
(7a+3)(7a-3)(-a+4)(-a-4)
(x+y)(x-y)(2+5b)(2-5b)
(x+y)(x-y)(1+3y)(-1+3y)
(x+7)(x-7)-(x+9)(x+4)(c+7)(c-7)-(2c+2)(2c-4)
(b+5)(b-5)62×
58
(9b+7)(9b-7)(2a+4b)(2a-4b)
(x+3y)(x-3y)(6+b)(6-b)
(5x+8y)(5x-8y)(x+5y)(-x+5y)
(y+10)(y-10)-(y+1)(y+1)(5b+9)(5b-9)-(2b-3)(4b+5)
(x+1)(x-1)65×
55
(y+8)(y-8)(-2a+4b)(-2a-4b)
(7x+y)(7x-y)(4a+b)(4a-b)
(-9x+y)(-9x-y)(8+y)(-8+y)
(y+8)(y-8)-(y-5)(y+3)(9a+10)(9a-10)-(3a+4)(2a-2)
(c+1)(c-1)45×
35
(s+2)(s-2)(-a+1)(-a-1)
(3x+9y)(3x-9y)(6a+b)(6a-b)
(-2x+2y)(-2x-2y)(4x+4y)(-4x+4y)
(t+6)(t-6)-(t+8)(t-6)(2b+1)(2b-1)+(4b-7)(4b-3)
(a+5)(a-5)91×
89
(8s+4)(8s-4)(a+1)(a-1)
(x+y)(x-y)(a+6b)(a-6b)
(4x+y)(4x-y)(5+4y)(-5+4y)
(y+5)(y-5)-(y+3)(y+4)(3t+2)(3t-2)+(4t-7)(4t-10)
(y+9)(y-9)304×
(6a+8)(6a-8)(-8a+3b)(-8a-3b)
(x+9y)(x-9y)(2a+7b)(2a-7b)
(x+6y)(x-6y)(5x+y)(-5x+y)
(b+6)(b-6)+(b+7)(b+7)(s+5)(s-5)-(3s+4)(3s+5)
(x+6)(x-6)301×
299
(y+4)(y-4)(-2a+7)(-2a-7)
(x+5y)(x-5y)(4+b)(4-b)
(x+2y)(x-2y)(10+y)(-10+y)
(t+1)(t-1)+(t-9)(t+9)(a+10)(a-10)-(2a-6)(3a+8)
(b+1)(b-1)72×
68
(2a+10)(2a-10)(a+5b)(a-5b)
(x+8y)(x-8y)(6+b)(6-b)
(x+y)(x-y)(x+y)(-x+y)
(t+9)(t-9)+(t+4)(t+5)(5y+10)(5y-10)-(2y-6)(3y-2)
(x+8)(x-8)502×
498
(b+4)(b-4)(-a+8b)(-a-8b)
(9x+y)(9x-y)(4+2b)(4-2b)
(-x+y)(-x-y)(x+4y)(-x+4y)
(b+5)(b-5)+(b-9)(b+5)(10s+10)(10s-10)-(3s+2)(4s-3)
(x+4)(x-4)604×
596
(5b+3)(5b-3)(-a+7)(-a-7)
(x+7y)(x-7y)(8+5b)(8-5b)
(-3x+y)(-3x-y)(10+6y)(-10+6y)
(s+7)(s-7)+(s-3)(s+4)(c+1)(c-1)+(3c+2)(3c-3)
(b+4)(b-4)905×
(c+7)(c-7)(a+b)(a-b)
(5x+7y)(5x-7y)(8+9b)(8-9b)
(-x+y)(-x-y)(1+y)(-1+y)
(y+5)(y-5)-(y-4)(y-8)(y+3)(y-3)-(3y-4)(4y-3)
(t+3)(t-3)42×
(s+10)(s-10)(a+9b)(a-9b)
(x+9y)(x-9y)(2a+b)(2a-b)
(-x+9y)(-x-9y)(3+3y)(-3+3y)
(s+4)(s-4)+(s-4)(s-8)(4x+2)(4x-2)-(3x+7)(4x-5)
(t+6)(t-6)42×
(a+10)(a-10)(a+4)(a-4)
(x+9y)(x-9y)(6a+b)(6a-b)
(-5x+y)(-5x-y)(8+y)(-8+y)
(x+9)(x-9)-(x-2)(x+5)(x+7)(x-7)+(3x-4)(2x+9)
(y+2)(y-2)82×
(5t+5)(5t-5)(4a+b)(4a-b)
(9x+y)(9x-y)(10+b)(10-b)
(-8x+5y)(-8x-5y)(x+y)(-x+y)
(t+4)(t-4)+(t+2)(t+8)(x+5)(x-5)-(2x-6)(4x+2)
(c+1)(c-1)201×
199
(9a+6)(9a-6)(8a+b)(8a-b)
(x+y)(x-y)(3a+2b)(3a-2b)
(-x+3y)(-x-3y)(9+3y)(-9+3y)
(y+10)(y-10)-(y+2)(y-3)(y+7)(y-7)-(3y+9)(4y+2)
(x+6)(x-6)92×
88
(2b+3)(2b-3)(-7a+1)(-7a-1)
(6x+y)(6x-y)(a+b)(a-b)
(5x+y)(5x-y)(3+4y)(-3+4y)
(a+1)(a-1)+(a-6)(a-2)(9x+9)(9x-9)-(3x-4)(4x-9)
(y+8)(y-8)405×
(a+1)(a-1)(4a+4b)(4a-4b)
(8x+y)(8x-y)(2a+2b)(2a-2b)
(3x+3y)(3x-3y)(8+y)(-8+y)
(b+5)(b-5)-(b+9)(b+4)(3b+5)(3b-5)-(4b+7)(2b-6)
(c+10)(c-10)602×
598
(s+7)(s-7)(-a+3)(-a-3)
(3x+2y)(3x-2y)(9+b)(9-b)
(x+4y)(x-4y)(3+9y)(-3+9y)
(x+4)(x-4)-(x-4)(x-1)(6t+7)(6t-7)+(3t-4)(2t+7)
(s+2)(s-2)84×
76
(7y+7)(7y-7)(-5a+4)(-5a-4)
(x+3y)(x-3y)(5+4b)(5-4b)
(-6x+y)(-6x-y)(1+y)(-1+y)
(s+2)(s-2)-(s+1)(s-2)(c+7)(c-7)+(3c+6)(4c-9)
(y+8)(y-8)85×
(s+5)(s-5)(-a+1)(-a-1)
(x+y)(x-y)(9+b)(9-b)
(-2x+y)(-2x-y)(7x+y)(-7x+y)
(x+9)(x-9)+(x+9)(x+8)(b+1)(b-1)+(4b+1)(2b-2)
(b+3)(b-3)61×
59
(s+2)(s-2)(-a+6)(-a-6)
(3x+9y)(3x-9y)(a+4b)(a-4b)
(x+y)(x-y)(9x+y)(-9x+y)
(c+3)(c-3)+(c-1)(c-7)(b+7)(b-7)+(4b-6)(2b+3)
(s+6)(s-6)31×
29
(3c+9)(3c-9)(8a+9)(8a-9)
(5x+y)(5x-y)(4+6b)(4-6b)
(x+y)(x-y)(10+3y)(-10+3y)
(s+4)(s-4)-(s+9)(s+9)(c+9)(c-9)+(4c+10)(4c-6)
(c+9)(c-9)301×
(a+5)(a-5)(a+b)(a-b)
(x+y)(x-y)(2+b)(2-b)
(x+y)(x-y)(x+4y)(-x+4y)
(x+2)(x-2)-(x-3)(x-7)(4x+1)(4x-1)-(3x-7)(4x+1)
(x+7)(x-7)33×
27
(s+10)(s-10)(3a+8)(3a-8)
(3x+5y)(3x-5y)(6+9b)(6-9b)
(-5x+3y)(-5x-3y)(4+y)(-4+y)
(y+7)(y-7)+(y-1)(y-6)(c+9)(c-9)+(3c-6)(2c-8)
(c+4)(c-4)703×
697
(2a+1)(2a-1)(-8a+6)(-8a-6)
(x+3y)(x-3y)(5+b)(5-b)
(2x+y)(2x-y)(9x+8y)(-9x+8y)
(c+8)(c-8)-(c+4)(c+9)(c+5)(c-5)+(4c-2)(2c-5)
(b+4)(b-4)31×
(8y+9)(8y-9)(a+4)(a-4)
(x+6y)(x-6y)(3+3b)(3-3b)
(c+7)(c-7)+(c+1)(c+6)(b+4)(b-4)+(4b+6)(2b+9)
(y+7)(y-7)105×
95
(t+10)(t-10)(a+b)(a-b)
(2x+y)(2x-y)(a+b)(a-b)
(-6x+6y)(-6x-6y)(8+6y)(-8+6y)
(t+8)(t-8)-(t-8)(t+2)(8x+2)(8x-2)-(3x+10)(3x-3)
(s+9)(s-9)803×
797
(c+7)(c-7)(6a+4)(6a-4)
(x+y)(x-y)(3+b)(3-b)
(7x+8y)(7x-8y)(6+5y)(-6+5y)
(x+9)(x-9)+(x-7)(x-8)(x+6)(x-6)+(2x-10)(4x-4)
(a+9)(a-9)201×
(4x+4)(4x-4)(-a+2b)(-a-2b)
(9x+y)(9x-y)(a+8b)(a-8b)
(-x+y)(-x-y)(2x+y)(-2x+y)
(c+5)(c-5)+(c+9)(c+8)(x+8)(x-8)-(2x-3)(4x-10)
(a+1)(a-1)302×
298
(a+7)(a-7)(-9a+6b)(-9a-6b)
(x+y)(x-y)(9a+b)(9a-b)
(-x+y)(-x-y)(7+y)(-7+y)
(t+4)(t-4)+(t+5)(t+8)(10c+7)(10c-7)+(3c+10)(2c-6)
(x+8)(x-8)105×
(y+2)(y-2)(a+7)(a-7)
(x+y)(x-y)(x+8y)(-x+8y)
(x+2)(x-2)+(x+9)(x-7)(4c+2)(4c-2)+(2c-6)(4c+8)
(a+3)(a-3)503×
497
(c+4)(c-4)(-a+2)(-a-2)
(x+7y)(x-7y)(9a+b)(9a-b)
(x+y)(x-y)(4x+y)(-4x+y)
(c+1)(c-1)+(c-5)(c-9)(b+9)(b-9)-(4b+1)(4b-6)
(a+5)(a-5)805×
795
(7a+1)(7a-1)(a+9b)(a-9b)
(x+4y)(x-4y)(10+b)(10-b)
(x+y)(x-y)(6x+7y)(-6x+7y)
(b+7)(b-7)+(b-7)(b+2)(5x+10)(5x-10)+(4x-8)(2x-4)
(c+5)(c-5)405×
(x+3)(x-3)(6a+5)(6a-5)
(x+y)(x-y)(3a+b)(3a-b)
(6x+y)(6x-y)(9+y)(-9+y)
(y+1)(y-1)+(y-9)(y+5)(5c+10)(5c-10)+(2c-3)(4c-7)
(s+5)(s-5)803×
(s+6)(s-6)(-7
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