北师大版七年级数学下册整式的乘法练习题 15Word文档下载推荐.docx
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3x2-(-2x+3)(-2x-3)
(-2x+3-y)(-2x+3-y)
(2n+3m)(2n-3m)
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(mn+4)(mn-4)-m2
4x2-(-2-2x)(-2+2x)
(-2a-b+c)(-2a-b-c)
(5-3t)2-(5+3t)2
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2(-2x+3)(-2x-3)
(-2m+3)(-2m-3)-m2
3x2-(-2x-2y)(-2x+2y)
(x+2y+z)(x+2y-z)
(-2x+3)2-(-2x-3)2
(-2x+3)(-2x-3)
2(2n+3m)(2n-3m)
(-m+1+n)(-m+1-n)
(4-y)2-(4+y)2
(-2-2a)(-2+2a)
2[(x+2y)-1][(x+2y)+1]
2x2-(5-3x)(5+3x)
(mn+4-n)(mn+4+n)
(2n+3m)2-(2n-3m)2
[(x+2y)-1][(x+2y)+1]
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(5-3n)(5+3n)-m2
5x2-(5-3x)(5+3x)
(-2-2a+b)(-2-2a-b)
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(2n+3m-4)(2n+3m+4)
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2(-m+1)(-m-1)
2x2-(4-x)(4+x)
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(-2a-2b)(-2a+2b)
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