北师大版七年级数学下册整式的乘法练习题 13Word格式文档下载.docx
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4x2-(x+2y)(x-2y)
(-2-2a+b)(-2-2a-b)
(5-3t)2-(5+3t)2
(5-3t)(5+3t)
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3(-2-2a)(-2+2a)
(2n+3m)(2n-3m)-m2
2x2-(-x+1)(-x-1)
(4-y+x)(4-y-x)
[(x+2y)-1][(x+2y)+1]
4(mn+4)(mn-4)
(-m+1)(-m-1)-m2
3x2-(-2x-2y)(-2x+2y)
(-2x+3-y)(-2x+3-y)
(-m+1)2-(-m-1)2
x+2y)2
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2[(x+2y)-1][(x+2y)+1]
5x2-(5-3x)(5+3x)
(mn+4)2-(mn-4)2
(x+2y)(x-2y)
x+3y)2
3(mn+4)(mn-4)
5x2-(-2x+3)(-2x-3)
(-2a-b+c)(-2a-b-c)
(-2a-2b)(-2a+2b)
2(mn+4)(mn-4)
(m+2n)(m-2n)-m2
(5-3t-2)(5-3t+2)
(-2-2a)2-(-2+2a)2
x+5y)2
4x2-(4-x)(4+x)
4(-2x+3)(-2x-3)
(-2m-2n)(-2m+2n)-m2
2x2-(-2x+3)(-2x-3)
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3(x+2y)(x-2y)
(4-m)(4+m)-m2
3x2-(-x+1)(-x-1)
(mn+4-n)(mn+4+n)
4x2-(-2x+3)(-2x-3)
(-2x+3)(-2x-3)
3(-2a-2b)(-2a+2b)
2x2-(4-x)(4+x)
(x+2y)2-(x-2y)2
3x2-[(x+2y)-1][(x+2y)+1]
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x+4y)2
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