人教版八年级数学上册乘法公式综合练习题精选80.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80.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80
(t+7)(t-7)85×75
(5t+4)(5t-4)(2a+b)(2a-b)
(2x+6y)(2x-6y)(a+b)(a-b)
(-x+6y)(-x-6y)(8+y)(-8+y)
(a+8)(a-8)+(a-6)(a-2)(4s+1)(4s-1)-(4s+7)(4s-3)
(c+9)(c-9)42×38
(b+9)(b-9)(-a+b)(-a-b)
(x+2y)(x-2y)(2+2b)(2-2b)
(-x+y)(-x-y)(7x+y)(-7x+y)
(c+9)(c-9)-(c+6)(c-3)(s+6)(s-6)+(2s+1)(3s-6)
(c+6)(c-6)903×897
(9b+1)(9b-1)(a+4)(a-4)
(x+y)(x-y)(9a+b)(9a-b)
(8x+5y)(8x-5y)(1+y)(-1+y)
(x+7)(x-7)+(x-4)(x+6)(6t+10)(6t-10)+(4t+9)(4t-2)
(s+6)(s-6)41×39
(5b+4)(5b-4)(-7a+8)(-7a-8)
(x+8y)(x-8y)(6+b)(6-b)
(x+7y)(x-7y)(x+y)(-x+y)
(b+2)(b-2)-(b+9)(b+5)(b+10)(b-10)-(3b-5)(3b+1)
(b+4)(b-4)51×49
(a+1)(a-1)(6a+3)(6a-3)
(x+2y)(x-2y)(a+8b)(a-8b)
(-x+y)(-x-y)(x+3y)(-x+3y)
(s+6)(s-6)+(s+3)(s-5)(y+6)(y-6)+(2y+5)(4y-4)
(s+4)(s-4)901×899
(y+3)(y-3)(-6a+b)(-6a-b)
(7x+2y)(7x-2y)(a+b)(a-b)
(5x+y)(5x-y)(6x+y)(-6x+y)
(c+1)(c-1)-(c-2)(c-5)(7s+7)(7s-7)+(3s-7)(2s-3)
(c+1)(c-1)901×899
(c+7)(c-7)(-a+b)(-a-b)
(x+y)(x-y)(7a+b)(7a-b)
(-9x+y)(-9x-y)(5+y)(-5+y)
(a+7)(a-7)-(a+7)(a+3)(a+4)(a-4)+(4a-9)(4a+3)
(t+8)(t-8)72×68
(s+4)(s-4)(6a+6b)(6a-6b)
(x+5y)(x-5y)(a+b)(a-b)
(-6x+8y)(-6x-8y)(5+4y)(-5+4y)
(t+7)(t-7)-(t-9)(t+2)(8y+6)(8y-6)-(3y+2)(3y-5)
(t+6)(t-6)201×199
(2b+8)(2b-8)(-a+2b)(-a-2b)
(x+y)(x-y)(5a+5b)(5a-5b)
(x+2y)(x-2y)(x+5y)(-x+5y)
(x+7)(x-7)+(x-9)(x+9)(5x+2)(5x-2)-(2x-8)(4x+5)
(c+3)(c-3)601×599
(3a+5)(3a-5)(5a+4b)(5a-4b)
(8x+y)(8x-y)(8a+b)(8a-b)
(8x+6y)(8x-6y)(9x+y)(-9x+y)
(b+9)(b-9)+(b-7)(b-5)(5s+3)(5s-3)+(4s-2)(4s+4)
(s+7)(s-7)85×75
(s+6)(s-6)(6a+b)(6a-b)
(9x+y)(9x-y)(10+9b)(10-9b)
(-7x+y)(-7x-y)(8+y)(-8+y)
(s+5)(s-5)-(s+5)(s-7)(a+10)(a-10)+(2a+5)(2a-8)
(c+8)(c-8)91×89
(6y+5)(6y-5)(-4a+6)(-4a-6)
(x+y)(x-y)(7a+b)(7a-b)
(-x+7y)(-x-7y)(8+7y)(-8+7y)
(s+3)(s-3)-(s-5)(s-1)(a+7)(a-7)-(4a+9)(2a-9)
(a+8)(a-8)42×38
(9a+1)(9a-1)(a+3)(a-3)
(x+y)(x-y)(a+9b)(a-9b)
(-2x+y)(-2x-y)(5+y)(-5+y)
(t+3)(t-3)+(t+9)(t+3)(b+1)(b-1)-(4b-9)(2b-1)
(x+7)(x-7)91×89
(2s+6)(2s-6)(5a+3b)(5a-3b)
(4x+9y)(4x-9y)(7a+7b)(7a-7b)
(-x+y)(-x-y)(2x+y)(-2x+y)
(t+4)(t-4)+(t+8)(t+7)(10a+8)(10a-8)-(4a+1)(2a-6)
(x+9)(x-9)101×99
(4y+1)(4y-1)(a+5b)(a-5b)
(x+y)(x-y)(a+b)(a-b)
(-x+y)(-x-y)(8x+5y)(-8x+5y)
(t+1)(t-1)+(t-7)(t+3)(3t+5)(3t-5)+(4t+1)(3t-5)
(a+8)(a-8)502×498
(a+4)(a-4)(-a+8)(-a-8)
(x+y)(x-y)(10+b)(10-b)
(-x+y)(-x-y)(x+7y)(-x+7y)
(b+10)(b-10)-(b-8)(b-1)(t+5)(t-5)+(3t+1)(4t-9)
(c+4)(c-4)42×38
(s+1)(s-1)(-a+5)(-a-5)
(2x+6y)(2x-6y)(a+4b)(a-4b)
(-8x+y)(-8x-y)(6x+y)(-6x+y)
(c+5)(c-5)+(c+7)(c+4)(3s+10)(3s-10)+(4s+3)(3s-10)
(y+4)(y-4)604×596
(7c+3)(7c-3)(-a+3)(-a-3)
(8x+5y)(8x-5y)(a+b)(a-b)
(-x+5y)(-x-5y)(6+y)(-6+y)
(a+6)(a-6)-(a-2)(a+7)(4a+1)(4a-1)+(3a-6)(3a+10)
(x+10)(x-10)904×896
(7s+4)(7s-4)(a+b)(a-b)
(x+8y)(x-8y)(9a+7b)(9a-7b)
(-x+y)(-x-y)(1+y)(-1+y)
(x+3)(x-3)-(x+4)(x+5)(5s+4)(5s-4)+(3s-8)(3s+5)
(y+2)(y-2)205×195
(x+4)(x-4)(5a+9b)(5a-9b)
(x+y)(x-y)(10+b)(10-b)
(-5x+y)(-5x-y)(4+6y)(-4+6y)
(s+9)(s-9)-(s+2)(s+7)(3y+8)(3y-8)-(3y-10)(2y-2)
(c+2)(c-2)305×295
(4s+4)(4s-4)(-4a+5)(-4a-5)
(3x+5y)(3x-5y)(3+5b)(3-5b)
(-2x+3y)(-2x-3y)(3x+y)(-3x+y)
(s+1)(s-1)+(s+3)(s+4)(2s+10)(2s-10)-(3s+1)(2s+5)
(t+6)(t-6)84×76
(9t+4)(9t-4)(-a+5)(-a-5)
(5x+3y)(5x-3y)(5+b)(5-b)
(-x+7y)(-x-7y)(x+y)(-x+y)
(t+6)(t-6)-(t-4)(t+9)(8y+10)(8y-10)-(4y+9)(4y-5)
(a+2)(a-2)85×75
(t+1)(t-1)(-a+3b)(-a-3b)
(x+y)(x-y)(7+b)(7-b)
(-6x+2y)(-6x-2y)(10+4y)(-10+4y)
(a+7)(a-7)+(a+6)(a+2)(8x+2)(8x-2)-(4x+8)(3x-8)
(s+3)(s-3)44×36
(6s+8)(6s-8)(a+7b)(a-7b)
(x+y)(x-y)(3+b)(3-b)
(2x+5y)(2x-5y)(3x+y)(-3x+y)
(t+6)(t-6)+(t-5)(t-7)(9y+6)(9y-6)+(3y-5)(3y+8)
(s+9)(s-9)41×39
(6y+4)(6y-4)(2a+2)(2a-2)
(3x+7y)(3x-7y)(a+b)(a-b)
(-5x+5y)(-5x-5y)(x+6y)(-x+6y)
(c+6)(c-6)+(c-7)(c-8)(2y+7)(2y-7)-(3y+5)(4y+2)
(y+7)(y-7)71×69
(a+10)(a-10)(-9a+b)(-9a-b)
(4x+5y)(4x-5y)(3+b)(3-b)
(6x+y)(6x-y)(5x+8y)(-5x+8y)
(x+6)(x-6)+(x+9)(x+2)(5t+1)(5t-1)-(2t-6)(2t+8)
(c+8)(c-8)64×56
(b+10)(b-10)(-a+b)(-a-b)
(7x+7y)(7x-7y)(4+2b)(4-2b)
(8x+y)(8x-y)(9+y)(-9+y)
(a+2)(a-2)+(a+1)(a+1)(s+2)(s-2)-(3s+5)(2s+3)
(t+4)(t-4)54×46
(2y+1)(2y-1)(a+7)(a-7)
(4x+5y)(4x-5y)(6+9b)(6-9b)
(-x+7y)(-x-7y)(8+2y)(-8+2y)
(x+2)(x-2)-(x+9)(x-2)(10c+3)(10c-3)+(3c-2)(2c-5)
(c+3)(c-3)404×396
(y+5)(y-5)(9a+4)(9a-4)
(x+y)(x-y)(a+b)(a-b)
(9x+y)(9x-y)(x+y)(-x+y)
(y+7)(y-7)-(y-7)(y+8)(a+10)(a-10)+(3a-3)(2a-7)
(a+3)(a-3)404×396
(7a+10)(7a-10)(-6a+6)(-6a-6)
(2x+4y)(2x-4y)(3+b)(3-b)
(x+y)(x-y)(3x+y)(-3x+y)
(b+4)(b-4)+(b-5)(b+3)(9b+5)(9b-5)-(3b+6)(3b-1)
(t+1)(t-1)35×25
(9c+4)(9c-4)(8a+b)(8a-b)
(9x+6y)(9x-6y)(a+2b)(a-2b)
(x+5y)(x-5y)(10+9y)(-10+9y)
(a+3)(a-3)+(a-7)(a+6)(c+5)(c-5)-(2c+1)(3c+7)
(s+5)(s-5)64×56
(y+2)(y-2)(a+6)(a-6)
(x+y)(x-y)(2a+8b)(2a-8b)
(x+y)(x-y)(5+9y)(-5+9y)
(y+9)(y-9)+(y-3)(y+1)(4x+7)(4x-7)+(3x+8)(2x-5)
(y+10)(y-10)71×69
(t+5)(t-5)(-a+b)(-a-b)
(9x+8y)(9x-8y)(4+4b)(4-4b)
(x+4y)(x-4y)(8x+y)(-8x+y)
(y+5)(y-5)+(y+6)(y+7)(7b+9)(7b-9)+(2b-6)(4b-9)
(c+2)(c-2)301×299
(4b+3)(4b-3)(a+4)(a-4)
(x+y)(x-y)(a+b)(a-b)
(x+5y)(x-5y)(x+9y)(-x+9y)
(s+10)(s-10)-(s+1)(s-7)(b+10)(b-10)+(3b-5)(4b-10)
(s+1)(s-1)95×85
(s+3)(s-3)(-a+4)(-a-4)
(9x+9y)(9x-9y)(5+b)(5-b)
(-6x+y)(-6x-y)(6+4y)(-6+4y)
(t+3)(t-3)+(t-7)(t-2)(x+6)(x-6)-(2x+2)(2x-8)
(c+2)(c-2)804×796
(t+9)(t-9)(-a+b)(-a-b)
(x+4y)(x-4y)(4+9b)(4-9b)
(-x+y)(-x-y)(8x+9y)(-8x+9y)
(c+9)(c-9)-(c-4)(c+6)(8s+10)(8s-10)+(2s-5)(2s+5)
(y+6)(y-6)605×595
(6b+8)(6b-8)(7a+4b)(7a-4b)
(5x+8y)(5x-8y)(a+9b)(a-9b)
(-8x+3y)(-8x-3y)(10+4y)(-10+4y)
(c+8)(c-8)+(c-7)(c-5)(x+9)(x-9)+(2x-4)(4x-6)
(y+3)(y-3)102×98
(y+5)(y-5)(-a+7b)(-a-7b)
(x+y)(x-y)(5a+4b)(5a-4b)
(-x+6y)(-x-6y)(9+y)(-9+y)
(c+1)(c-1)+(c-6)(c+4)(2c+4)(2c-4)+(4c+3)(4c-10)
(t+6)(t-6)105×95
(y+8)(y-8)(-a+b)(-a-b)
(2x+y)(2x-y)(3+9b)(3-9b)
(-x+y)(-x-y)(4x+8y)(-4x+8y)
(x+5)(x-5)+(x-4)(x+6)(a+4)(a-4)+(2a+1)(3a+1)
(c+5)(c-5)84×76
(x+4)(x-4)(3a+1)(3a-1)
(x+9y)(x-9y)(3+9b)(3-9b)
(x+8y)(x-8y)(1+7y)(-1+7y)
(a+3)(a-3)-(a-5)(a-9)(b+5)(b-5)-(2b-10)(4b+8)
(c+3)(c-3)304×296
(2y+5)(2y-5)(-5a+7b)(-5a-7b)
(x+7y)(x-7y)(10+4b)(10-4b)
(-x+5y)(-x-5y)(1+y)(-1+y)
(b+2)(b-2)+(b+6)(b+3)(4x+3)(4x-3)-(3x+7)(2x+9)
(y+4)(y-4)61×59
(8t+4)(8t-4)(-a+5)(-a-5)
(x+y)(x-y)(9a+b)(9a-b)
(-x+y)(-x-y)(5+9y)(-5+9y)
(a+2)(a-2)-(a+1)(a+1)(t+3)(t-3)+(4t+5)(3t+4)
(c+4)(c-4)52×48
(5y+5)(5y-5)(a+4)(a-4)
(x+y)(x-y)(a+6b)(a-6b)
(-x+3y)(-x-3y)(x+y)(-x+y)
(x+5)(x-5)+(x+8)(x-2)(2s+6)(2s-6)-(2s+4)(4s-8)
(a+6)(a-6)81×79
(9y+6)(9y-6)(a+6)(a-6)
(6x+y)(6x-y)(9+b)(9-b)
(x+4y)(x-4y)(x+y)(-x+y)
(t+9)(t-9)-(t+7)(t-1)(7c+4)(7c-4)+(2c-9)(3c-4)
(a+4)(a-4)105×95
(4s+6)(4s-6)(-a+2)(-a-2)
(2x+y)(2x-y)(a+6b)(a-6b)
(x+3y)(x-3y)(x+y)(-x+y)
(s+10)(s-10)-(s-5)(s-3)(x+3)(x-3)-(3x-4)(3x-9)
(a+1)(a-1)601×599
(3s+9)(3s-9)(a+6)(a-6)
(x+y)(x-y)(a+2b)(a-2b)
(-x+4y)(-x-4y)(9x+y)(-9x+y)
(s+2)(s-2)+(s+1)(s-6)(s+1)(s-1)-(4s+2)(2s+7)
(x+6)(x-6)44×36
(9c+10)(9c-10)(-a+1)(-a-1)
(8x+4y)(8x-4y)(2a+b)(2a-b)
(x+2y)(x-2y)(10+3y)(-10+3y)
(b+6)(b-6)+(b-3)(b+1)(a+5)(a-5)-(2a-4)(2a+7)
(s+6)(s-6)44×36
(6t+3)(6t-3)(4a+4)(4a-4)
(x+6y)(x-6y)(6a+9b)(6a-9b)
(x+2y)(x-2y)(1+y)(-1+y)
(y+10)(y-10)-(y+2)(y-2)(a+10)(a-10)-(3a-10)(4a+3)
(t+4)(t-4)501×499
(8a+2)(8a-2)(a+b)(a-b)
(x+6y)(x-6y)(3+b)(3-b)
(x+7y)(x-7y)(1+y)(-1+y)
(c+2)(c-2)+(c+9)(c+6)(8t+6)(8t-6)+(4t-10)(2t+10)
(a+10)(a-10)705×695
(6y+1)(6y-1)(a+3)(a-3)
(x+3y)(x-3y)(7+7b)(7-7b)
(-x+y)(-x-y)(x+8y)(-x+8y)
(c+6)(c-6)-(c+6)(c+2)(3x+7)(3x-7)+(3x-2)(4x+5)
(x+10)(x-10)503×497
(s+6)(s-6)(a+9b)(a-9b)
(x+7y)(x-7y)(3+3b)(3-3b)
(x+y)(x-y)(6+y)(-6+y)
(b+1)(b-1)-(b+5)(b-4)(4x+2)(4x-2)+(3x-7)(3x+10)
(y+9)(y-9)71×69
(s+7)(s-7)(-a+b)(-a-b)
(x+9y)(x-9y)(8+b)(8-b)
(x+2y)(x-2y)(3+4y)(-3+4y)
(s+2)(s-2)+(s+2)(s-4)(x+9)(x-9)-(3x-6)(4x-6)
(y+1)(y-1)602×598
(a+1)(a-1)(8a+b)(8a-b)
(x+y)(x-y)(2a+b)(2a-b)
(2x+7y)(2x-7y)(4+9y)(-4+9y)
(b+8)(b-8)+(b-3)(b-5)(c+2)(c-2)+(4c+4)(2c+3)
(x+8)(x-8)95×85
(2c+7)(2c-7)(-9a+3b)(-9a-3b)
(6x+y)(6x-y)(8+3b)(8-3b)
(9x+y)(9x-y)(8x+8y)(-8x+8y)
(a+7)(a-7)-(a+8)(a-1)(4s+6)(4s-6)+(3s+1)(4s+1)
(s+10)(s-10)35×25
(c+2)(c-2)(-5a+9)(-5a-9)
(x+y)(x-y)(a+b)(a-b)
(-x+3y)(-x-3y)(x+6y)(-x+6y)
(c+1)(c-1)-(c-7)(c+2)(5x+3)(5x-3)-(4x+7)(3x-9)
(x+4)(x-4)405×395
(9t+1)(9t-1)(-3a+8)(-3a-8)
(x+y)(x-y)(2+b)(2-b)
(x+9y)(x-9y)(7x+y)(-7x+y)
(a+5)(a-5)-(a+3)(a-6)(8y+3)(8y-3)+(4y+2)(2y-7)
(a+8)(a-8)54×46
(6b+7)(6b-7)(-a+2b)(-a-2b)
(x+y)(x-y)(7+4b)(7-4b)
(-2x+y)(-2x-y)(8+y)(-8+y)
(x+6)(x-6)+(x-3)(x+9)(3a+2)(3a-2)+(2a-4)(3a+10)
(c+8)(c-8)64×5
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