北师大版七年级数学下册整式的乘法练习题 38.docx
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北师大版七年级数学下册整式的乘法练习题38
[(x+2y)-1][(x+2y)+1]
(2n+3m)2-(2n-3m)2
(2n+3m)(2n-3m)
(-
x+3y)2
-4(
x-
y)2
3(4-y)(4+y)
(-2-2n)(-2+2n)-m2
3x2-(-x+1)(-x-1)
(x+2y+z)(x+2y-z)
[(x+2y)-1]2-[(x+2y)+1]2
(x+2y)(x-2y)
(-
x+4y)2
-6(
x-
y)2
4(5-3t)(5+3t)
(2n+3m)(2n-3m)-m2
4x2-(x+2y)(x-2y)
(-2-2a+b)(-2-2a-b)
(2n+3m)2-(2n-3m)2
(-2x+3)(-2x-3)
(-
x+4y)2
-8(
x-
y)2
2(mn+4)(mn-4)
(-2m-2n)(-2m+2n)-m2
4x2-(-2x-2y)(-2x+2y)
[(x+2y)-1][(x+2y)+1]
(-2x+3)2-(-2x-3)2
(5-3t)(5+3t)
(-
x+6y)2
-6(
x-
y)2
2(4-y)(4+y)
[(m+2n)-1][(m+2n)+1]-m2
2x2-(x+2y)(x-2y)
(5-3t-2)(5-3t+2)
(-2-2a)2-(-2+2a)2
(-m+1)(-m-1)
(-
x+3y)2
-8(
x-
y)2
4(4-y)(4+y)
(5-3n)(5+3n)-m2
3x2-[(x+2y)-1][(x+2y)+1]
(-m+1+n)(-m+1-n)
(-2x+3)2-(-2x-3)2
(-2a-2b)(-2a+2b)
(-
x+6y)2
-4(
x-
y)2
2(4-y)(4+y)
(5-3n)(5+3n)-m2
4x2-(x+2y)(x-2y)
(2n+3m-4)(2n+3m+4)
(-2x+3)2-(-2x-3)2
(-2-2a)(-2+2a)
(-
x+5y)2
-8(
x-
y)2
4(-2x+3)(-2x-3)
(-2m-2n)(-2m+2n)-m2
2x2-[(x+2y)-1][(x+2y)+1]
(-2x+3-y)(-2x+3-y)
(4-y)2-(4+y)2
(2n+3m)(2n-3m)
(-
x+4y)2
-6(
x-
y)2
4(mn+4)(mn-4)
(4-m)(4+m)-m2
5x2-[(x+2y)-1][(x+2y)+1]
(-m+1+n)(-m+1-n)
(5-3t)2-(5+3t)2
(-2x+3)(-2x-3)
(-
x+5y)2
-4(
x-
y)2
2(-m+1)(-m-1)
(m+2n)(m-2n)-m2
2x2-(x+2y)(x-2y)
(-m+1+n)(-m+1-n)
(2n+3m)2-(2n-3m)2
(2n+3m)(2n-3m)
(-
x+3y)2
-4(
x-
y)2
3(x+2y)(x-2y)
(5-3n)(5+3n)-m2
5x2-(4-x)(4+x)
[(x+2y)-1][(x+2y)+1]
(-2x+3)2-(-2x-3)2
(2n+3m)(2n-3m)
(-
x+4y)2
-2(
x-
y)2
3[(x+2y)-1][(x+2y)+1]
(2n+3m)(2n-3m)-m2
4x2-(x+2y)(x-2y)
(2n+3m-4)(2n+3m+4)
(4-y)2-(4+y)2
(-2a-2b)(-2a+2b)
(-
x+2y)2
-2(
x-
y)2
3(5-3t)(5+3t)
(-2-2n)(-2+2n)-m2
5x2-(2y+3x)(2y-3x)
(-2a-b+c)(-2a-b-c)
(x+2y)2-(x-2y)2
(-2-2a)(-2+2a)
(-
x+5y)2
-8(
x-
y)2
2(-m+1)(-m-1)
(mn+4)(mn-4)-m2
2x2-(-x+1)(-x-1)
(4-y+x)(4-y-x)