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因式分解x^3+x^2y-xy^2+y^3
人气:261 ℃ 时间:2020-04-07 22:23:35
解答
符号好像有问题.
x³+x²y-xy²-y³
=x²(x+y)-y²(x+y)
=(x+y)(x²-y²)
=(x-y)(x+y)²
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