七年级数学下册用整式乘法公式的计算题 680.docx
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七年级数学下册用整式乘法公式的计算题680
(2mn+)(2mn-)-4m2n2
2x2-(x+4)(x-4)
(x-4y+3z)(x-4y-3z)
(+3)2-(-3)2
(-8x-7)(-8x+7)
(3x-9)(3x+9)
(-x-3y)2
-2(x-y)2
2(-x+y)(x+y)
(mn+)(mn-)-5m2n2
x2-(x+1)(x-1)
(4x+2y+2z)(4x+2y-2z)
(+5)2-(-5)2
(-5x+9)(-5x+9)
(3x+3)(3x-3)
(-x+y)2
-2(x-y)2
(-x-2y)(x-2y)
(2mn+)(2mn-)-3m2n2
2x2-(2x+4)(2x-4)
(4x-3y+3z)(4x-3y-3z)
(+3)2-(-3)2
(-9x+3)(-9x+3)
(3x+8)(3x+8)
(-x-y)2
-2(x-y)2
(-x+2y)(x-2y)
(mn+)(mn-)-3m2n2
2x2-(x+3)(x-3)
(3x-4y+3z)(3x-4y-3z)
(+5)2-(-5)2
(-5x-7)(-5x+7)
(3x+9)(3x-9)
(-x+3y)2
-(x+y)2
3(-x+3y)(x+3y)
(2mn+)(2mn-)-2m2n2
3x2-(3x+4)(3x-4)
(2x+2y+z)(2x+2y-z)
(+2)2-(-2)2
(-4x+8)(-4x+8)
(8x+7)(8x+7)
(-x-3y)2
-3(x+y)2
2(-x-3y)(x+3y)
(mn+)(mn-)-1m2n2
4x2-(2x+1)(2x-1)
(x-y+z)(x-y-z)
(+1)2-(-1)2
(-3x+8)(-3x-8)
(8x-7)(8x+7)
(-x+2y)2
-2(x+y)2
4(-x+2y)(x+2y)
(mn+)(mn-)-4m2n2