作业帮(2x+3y)(2x-3y)(4x^2+6xy+9y^2)(4x^2-6xy+9y^2)
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/26 01:33:54
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(2x+3y)(2x-3y)(4x^2+6xy+9y^2)(4x^2-6xy+9y^2)
(2x+3y)(2x-3y)(4x^2+6xy+9y^2)(4x^2-6xy+9y^2)
(2x+3y)(2x-3y)(4x^2+6xy+9y^2)(4x^2-6xy+9y^2)
(2x+3y)(2x-3y)(4x^2+6xy+9y^2)(4x^2-6xy+9y^2)
=(2x+3y)(2x-3y)(2x+3y)^2(2x-3y)^2
=(2x+3y)^3(2x-3y)^3
不知道你这道题有什么要求,再算一步也可以,就是
＝（4x^2-9y^2)＾3
(2x+3y)(2x-3y)(4x^2+6xy+9y^2)(4x^2-6xy+9y^2)(立方差,和立方和公式)
=(8x^3-27y^3)(8x^3+27y^3)(平方差公式)
=64x^6-729y^6
立方差:(a-b)(a^+ab+b^)=a^3-b^3
立方和:(a+b)(a^-ab+b^)=a^3+b^3
x(x-y)2-(y-x)3
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