北师大版七年级数学下册整式的乘法练习题 9.docx
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北师大版七年级数学下册整式的乘法练习题9
(-
x+3y)2
-8(
x-
y)2
3(-m+1)(-m-1)
(5-3n)(5+3n)-m2
5x2-(4-x)(4+x)
(x+2y+z)(x+2y-z)
(5-3t)2-(5+3t)2
(-2-2a)(-2+2a)
(-
x+3y)2
-6(
x-
y)2
3(-2x+3)(-2x-3)
(m+2n)(m-2n)-m2
2x2-(-2x-2y)(-2x+2y)
[(x+2y)-1][(x+2y)+1]
[(x+2y)-1]2-[(x+2y)+1]2
(-2-2a)(-2+2a)
(-
x+6y)2
-4(
x-
y)2
2(x+2y)(x-2y)
(-2m-2n)(-2m+2n)-m2
3x2-(-2x-2y)(-2x+2y)
(4-y+x)(4-y-x)
[(x+2y)-1]2-[(x+2y)+1]2
(mn+4)(mn-4)
(-
x+3y)2
-6(
x-
y)2
4[(x+2y)-1][(x+2y)+1]
(-2m+3)(-2m-3)-m2
2x2-(-x+1)(-x-1)
(4-y+x)(4-y-x)
(-m+1)2-(-m-1)2
(x+2y)(x-2y)
(-
x+4y)2
-2(
x-
y)2
3[(x+2y)-1][(x+2y)+1]
(-m+1)(-m-1)-m2
5x2-(x+4)(x-4)
(4-y+x)(4-y-x)
(4-y)2-(4+y)2
[(x+2y)-1][(x+2y)+1]
(-
x+2y)2
-4(
x-
y)2
4(-2-2a)(-2+2a)
(5-3n)(5+3n)-m2
4x2-(4-x)(4+x)
(5-3t-2)(5-3t+2)
(4-y)2-(4+y)2
(5-3t)(5+3t)
(-
x+4y)2
-6(
x-
y)2
3(2n+3m)(2n-3m)
(-m+1)(-m-1)-m2
5x2-(-2x-2y)(-2x+2y)
(2n+3m-4)(2n+3m+4)
(4-y)2-(4+y)2
(-2-2a)(-2+2a)
(-
x+2y)2
-6(
x-
y)2
3(4-y)(4+y)
(2n+3m)(2n-3m)-m2
3x2-(-2-2x)(-2+2x)
(4-y+x)(4-y-x)
(2n+3m)2-(2n-3m)2
(4-y)(4+y)
(-
x+2y)2
-8(
x-
y)2
3(2n+3m)(2n-3m)
(-2m-2n)(-2m+2n)-m2
4x2-(4-x)(4+x)
[(x+2y)-1][(x+2y)+1]
(mn+4)2-(mn-4)2
(2n+3m)(2n-3m)
(-
x+4y)2
-6(
x-
y)2
2(-m+1)(-m-1)
(m+2n)(m-2n)-m2
5x2-[(x+2y)-1][(x+2y)+1]
(2n+3m-4)(2n+3m+4)
(-2x+3)2-(-2x-3)2
(-m+1)(-m-1)
(-
x+3y)2
-2(
x-
y)2
4(-2x+3)(-2x-3)
(4-m)(4+m)-m2
5x2-[(x+2y)-1][(x+2y)+1]
(5-3t-2)(5-3t+2)
(4-y)2-(4+y)2
(mn+4)(mn-4)
(-
x+2y)2
-2(
x-
y)2
3(mn+4)(mn-4)
(m+2n)(m-2n)-m2
3x2-(-2x-2y)(-2x+2y)
(4-y+x)(4-y-x)
(-m+1)2-(-m-1)2
(x+2y)(x-2y)
(-
x+4y)2
-8(
x-
y)2
4(x+2y)(x-2y)
(-2m+3)(-2m-3)-m2
2x2-(-2-2x)(-2+2x)
(x+2y+z)(x+2y-z)
(-2a-2b)2-(-2a+2b)2
(mn+4)(mn-4)
(-
x+2y)2