北师大版七年级数学下册整式的乘法练习题 3Word格式.docx
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(5-3t)(5+3t)
(-x+3y)2
-2(x-y)2
3(-2-2a)(-2+2a)
5x2-(2y+3x)(2y-3x)
[(x+2y)-1][(x+2y)+1]
(-x+5y)2
-4(x-y)2
4(-m+1)(-m-1)
3x2-(x+4)(x-4)
(x+2y+z)(x+2y-z)
(-2x+3)2-(-2x-3)2
(-m+1)(-m-1)
(-x+2y)2
4[(x+2y)-1][(x+2y)+1]
(-m+1)(-m-1)-m2
2x2-(-x+1)(-x-1)
(-2a-b+c)(-2a-b-c)
(-m+1)2-(-m-1)2
(-2a-2b)(-2a+2b)
(-x+6y)2
3(-2a-2b)(-2a+2b)
[(m+2n)-1][(m+2n)+1]-m2
(mn+4)2-(mn-4)2
-8(x-y)2
2[(x+2y)-1][(x+2y)+1]
(-2-2n)(-2+2n)-m2
5x2-(-2-2x)(-2+2x)
(5-3t-2)(5-3t+2)
[(x+2y)-1]2-[(x+2y)+1]2
-6(x-y)2
3(-m+1)(-m-1)
(-2m-2n)(-2m+2n)-m2
3x2-(5-3x)(5+3x)
(2n+3m-4)(2n+3m+4)
4(-2-2a)(-2+2a)
(-2m+3)(-2m-3)-m2
4x2-(5-3x)(5+3x)
(4-y)2-(4+y)2
3(-2x+3)(-2x-3)
5x2-(5-3x)(5+3x)
(mn+4-n)(mn+4+n)
(4-y)(4+y)
4(-2x+3)(-2x-3)
4x2-(-2x+3)(-2x-3)
(4-y+x)(4-y-x)
(x+2y)2-(x-2y)2
(-2x+3)(-2x-3)
(-x+4y)2
3x2-(-x+1)(-x-1)
(-2-2a)(-2+2a)
(mn+4)(mn-4)-m2
4x2-(-x+1)(-x-1)
(2n+3m)(2n-3m)
3(5-3t)(5+3t)
5x2-(-2x+3)(-2x-3)