七年级数学下册用整式乘法公式的计算题 109.docx
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七年级数学下册用整式乘法公式的计算题七年级数学下册用整式乘法公式的计算题109(5x9)(5x9)(x3y)22(xy)2(x2y)(x2y)(2mn)(2mn)1m2n26x2(2x4)(2x4)(x3y3z)(x3y3z)
(1)2
(1)2(2x2)(2x2)(4x3)(4x3)(x3y)22(xy)2(x3y)(x3y)(2mn)(2mn)3m2n26x2(x1)(x1)(2x3y2z)(2x3y2z)
(1)2
(1)2(3x8)(3x8)(9x6)(9x6)(x2y)22(xy)22(x3y)(x3y)(mn)(mn)4m2n24x2(x2)(x2)(3x4y2z)(3x4y2z)(5)2(5)2(5x4)(5x4)(2x5)(2x5)(x2y)23(xy)23(xy)(xy)(2mn)(2mn)2m2n25x2(x1)(x1)(4x4y2z)(4x4y2z)
(2)2
(2)2(2x8)(2x8)(6x1)(6x1)(x2y)23(xy)22(x3y)(x3y)(2mn)(2mn)5m2n2x2(2x2)(2x2)(4x2y3z)(4x2y3z)
(2)2
(2)2(5x4)(5x4)(7x1)(7x1)(x2y)2(xy)23(x2y)(x2y)(3mn)(3mn)2m2n24x2(3x3)(3x3)(3x3y3z)(3x3y3z)(4)2(4)2(4x3)(4x3)(2x3)(2x3)