七年级数学下册平方差公式专项训练 2.docx
《七年级数学下册平方差公式专项训练 2.docx》由会员分享,可在线阅读,更多相关《七年级数学下册平方差公式专项训练 2.docx(15页珍藏版)》请在冰点文库上搜索。
七年级数学下册平方差公式专项训练2
(6x+4)(6x-4)+6x(6x-9)(8x+3y)(8x-3y)-(8x+8)(8x-8)
3x(x-3)+(x-2)(x+2)(5m+5)(5m-5)
x(x-10)+(2-x)(2+x)(8x-y)(8x+y)-2y(x-y)
11
(a+—b)(a-—b)+(5a-3b)(5a+3b)602×598
33
(6x-y)(6x+y)+5y(x-y)a2(a+2b)(a-2b)-a2b2
(2x+8)(2x-8)-2x(2x+8)(6x+4y)(6x-4y)-(6x+9)(6x-9)
4x(x+2)+(x-5)(x+5)(8m+7)(8m-7)
x(x+9)-(8-x)(8+x)(4x-y)(4x+y)+5y(x-y)
11
(a+—b)(a-—b)-(a-b)(a+b)605×595
55
(8x-y)(8x+y)+3y(x-y)a2(2a+3b)(2a-3b)-a2b2
(3x+3)(3x-3)-3x(3x+3)(5x+3y)(5x-3y)-(5x+7)(5x-7)
6x(x-1)-(x-5)(x+5)(8m+2)(8m-2)
x(x+1)+(5-x)(5+x)(6x-y)(6x+y)-3y(x-y)
11
(a+—b)(a-—b)+(a-4b)(a+4b)804×796
44
(2x-y)(2x+y)+2y(x-y)a2(4a+8b)(4a-8b)+a2b2
(8x+5)(8x-5)-8x(8x+5)(7x+3y)(7x-3y)+(7x+6)(7x-6)
5x(x+8)+(x-4)(x+4)(5m+6)(5m-6)
x(x+8)-(9-x)(9+x)(3x-y)(3x+y)+3y(x-y)
11
(a+—b)(a-—b)+(3a-3b)(3a+3b)703×697
22
(2x-y)(2x+y)-4y(x+y)a2(2a+7b)(2a-7b)+a2b2
(2x+3)(2x-3)+2x(2x-7)(9x+6y)(9x-6y)+(9x+8)(9x-8)
5x(x+8)+(x-2)(x+2)(m+4)(m-4)
x(x-6)-(8-x)(8+x)(3x-y)(3x+y)+5y(x+y)
11
(a+—b)(a-—b)-(2a-5b)(2a+5b)1006×994
33
(5x-y)(5x+y)-4y(x+y)a2(6a+9b)(6a-9b)+a2b2
(9x+1)(9x-1)-9x(9x-4)(2x+4y)(2x-4y)-(2x+1)(2x-1)
2x(x+4)-(x-3)(x+3)(9m+9)(9m-9)
x(x+6)+(7-x)(7+x)(9x-y)(9x+y)-3y(x+y)
11
(a+—b)(a-—b)-(5a-b)(5a+b)608×592
22
(6x-y)(6x+y)-3y(x+y)a2(6a+4b)(6a-4b)+a2b2
(9x+8)(9x-8)-9x(9x+6)(4x+3y)(4x-3y)+(4x+7)(4x-7)
6x(x+1)+(x-1)(x+1)(m+2)(m-2)
x(x-5)-(1-x)(1+x)(3x-y)(3x+y)+2y(x+y)
11
(a+—b)(a-—b)+(4a-b)(4a+b)604×596
55
(4x-y)(4x+y)-2y(x-y)a2(a+5b)(a-5b)+a2b2
(9x+9)(9x-9)+9x(9x-2)(3x+4y)(3x-4y)+(3x+4)(3x-4)
5x(x+9)-(x-1)(x+1)(4m+3)(4m-3)
x(x+6)-(5-x)(5+x)(4x-y)(4x+y)-3y(x-y)
11
(a+—b)(a-—b)+(4a-b)(4a+b)905×895
44
(4x-y)(4x+y)+2y(x-y)a2(a+6b)(a-6b)-a2b2
(6x+3)(6x-3)-6x(6x+4)(5x+3y)(5x-3y)+(5x+2)(5x-2)
3x(x-3)-(x-2)(x+2)(2m+9)(2m-9)
x(x-3)+(7-x)(7+x)(3x-y)(3x+y)-5y(x-y)
11
(a+—b)(a-—b)+(5a-2b)(5a+2b)603×597
44
(5x-y)(5x+y)-4y(x-y)a2(7a+b)(7a-b)-a2b2
(4x+8)(4x-8)-4x(4x+8)(3x+8y)(3x-8y)+(3x+2)(3x-2)
3x(x-9)-(x-4)(x+4)(6m+8)(6m-8)
x(x-4)+(1-x)(1+x)(5x-y)(5x+y)-3y(x-y)
11
(a+—b)(a-—b)-(a-5b)(a+5b)502×498
33
(2x-y)(2x+y)-5y(x+y)a2(6a+9b)(6a-9b)+a2b2
(4x+5)(4x-5)+4x(4x-8)(5x+3y)(5x-3y)+(5x+5)(5x-5)
6x(x-6)+(x-4)(x+4)(m+8)(m-8)
x(x+8)+(1-x)(1+x)(9x-y)(9x+y)-4y(x+y)
11
(a+—b)(a-—b)+(4a-b)(4a+b)906×894
55
(3x-y)(3x+y)-2y(x+y)a2(9a+3b)(9a-3b)+a2b2
(3x+6)(3x-6)+3x(3x+3)(4x+8y)(4x-8y)-(4x+7)(4x-7)
6x(x-6)+(x-3)(x+3)(3m+8)(3m-8)
x(x+1)+(4-x)(4+x)(3x-y)(3x+y)+3y(x+y)
11
(a+—b)(a-—b)-(3a-4b)(3a+4b)1009×991
44
(8x-y)(8x+y)-3y(x+y)a2(7a+7b)(7a-7b)-a2b2
(8x+7)(8x-7)-8x(8x-3)(6x+2y)(6x-2y)-(6x+8)(6x-8)
4x(x+9)-(x-1)(x+1)(4m+1)(4m-1)
x(x+7)-(1-x)(1+x)(5x-y)(5x+y)+3y(x+y)
11
(a+—b)(a-—b)+(5a-2b)(5a+2b)605×595
55
(2x-y)(2x+y)+4y(x-y)a2(2a+7b)(2a-7b)+a2b2
(4x+2)(4x-2)+4x(4x+3)(6x+4y)(6x-4y)+(6x+3)(6x-3)
5x(x-3)+(x-3)(x+3)(6m+3)(6m-3)
x(x-2)+(1-x)(1+x)(3x-y)(3x+y)+2y(x-y)
11
(a+—b)(a-—b)+(2a-b)(2a+b)209×191
22
(4x-y)(4x+y)-3y(x-y)a2(6a+4b)(6a-4b)+a2b2
(5x+2)(5x-2)-5x(5x+7)(9x+9y)(9x-9y)-(9x+3)(9x-3)
6x(x-9)-(x-2)(x+2)(5m+5)(5m-5)
x(x-2)-(7-x)(7+x)(x-y)(x+y)+3y(x-y)
11
(a+—b)(a-—b)+(3a-5b)(3a+5b)1009×991
33
(4x-y)(4x+y)-5y(x+y)a2(a+b)(a-b)+a2b2
(2x+2)(2x-2)+2x(2x-7)(2x+6y)(2x-6y)+(2x+6)(2x-6)
4x(x-7)-(x-1)(x+1)(6m+1)(6m-1)
x(x+3)-(4-x)(4+x)(4x-y)(4x+y)-3y(x-y)
11
(a+—b)(a-—b)+(2a-2b)(2a+2b)803×797
55
(x-y)(x+y)-2y(x-y)a2(5a+7b)(5a-7b)+a2b2
(7x+8)(7x-8)+7x(7x-2)(4x+5y)(4x-5y)-(4x+1)(4x-1)
2x(x-3)-(x-1)(x+1)(9m+5)(9m-5)
x(x-2)+(5-x)(5+x)(8x-y)(8x+y)+2y(x+y)
11
(a+—b)(a-—b)-(2a-5b)(2a+5b)702×698
33
(4x-y)(4x+y)+4y(x+y)a2(4a+4b)(4a-4b)-a2b2
(8x+7)(8x-7)+8x(8x+7)(4x+y)(4x-y)-(4x+6)(4x-6)
3x(x+5)+(x-4)(x+4)(5m+8)(5m-8)
x(x-2)-(6-x)(6+x)(4x-y)(4x+y)-4y(x-y)
11
(a+—b)(a-—b)+(4a-2b)(4a+2b)506×494
22
(9x-y)(9x+y)-5y(x+y)a2(9a+9b)(9a-9b)+a2b2
(x+5)(x-5)-x(x-6)(7x+y)(7x-y)-(7x+7)(7x-7)
6x(x-5)+(x-2)(x+2)(7m+5)(7m-5)
x(x-9)-(3-x)(3+x)(x-y)(x+y)-3y(x-y)
11
(a+—b)(a-—b)-(4a-3b)(4a+3b)104×96
55
(x-y)(x+y)-2y(x+y)a2(2a+5b)(2a-5b)+a2b2