七年级数学下册用整式乘法公式的计算题 63.docx
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七年级数学下册用整式乘法公式的计算题63
(-5x+9)(-5x-9)
(x-1)(x+1)
(-
x+2y)2
-3(
x-
y)2
3(-
x+3y)(
x+3y)
(3mn+
)(3mn-
)-3m2n2
4x2-(3x+1)(3x-1)
(2x-2y+2z)(2x-2y-2z)
(
+5)2-(
-5)2
(-4x-6)(-4x-6)
(5x+3)(5x+3)
(-
x+2y)2
-2(
x+
y)2
4(-
x+y)(
x+y)
(mn+
)(mn-
)-1m2n2
2x2-(x+3)(x-3)
(3x+2y+3z)(3x+2y-3z)
(
+3)2-(
-3)2
(-6x+5)(-6x-5)
(5x+8)(5x-8)
(-
x+3y)2
-2(
x-
y)2
4(-
x-y)(
x+y)
(2mn+
)(2mn-
)-6m2n2
x2-(x+2)(x-2)
(x+3y+3z)(x+3y-3z)
(
+1)2-(
-1)2
(-5x+3)(-5x+3)
(3x+7)(3x-7)
(-
x+y)2
-2(
x-
y)2
3(-
x+2y)(
x-2y)
(mn+
)(mn-
)-5m2n2
2x2-(2x+1)(2x-1)
(4x+2y+z)(4x+2y-z)
(
+3)2-(
-3)2
(-3x-9)(-3x-9)
(2x-6)(2x+6)
(-
x+3y)2
-(
x+
y)2
3(-
x-y)(
x-y)
(mn+
)(mn-
)-6m2n2
6x2-(2x+3)(2x-3)
(4x-2y+z)(4x-2y-z)
(
+2)2-(
-2)2
(-9x-1)(-9x+1)
(6x-5)(6x+5)
(-
x+3y)2
-3(
x-
y)2
(-
x-2y)(
x+2y)
(3mn+
)(3mn-
)-1m2n2
3x2-(x+2)(x-2)
(3x+2y+3z)(3x+2y-3z)
(
+2)2-(
-2)2
(-5x-5)(-5x-5)