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将多项式x四次方+y四次方+z四次方-2x²y²-2x²z²-2y²z²分解因式.
人气:377 ℃ 时间:2020-05-19 23:08:20
解答
原式=X^4-2X²Y²+Y^4-2(X²-Y²)Z²+Z^4
=(X²-Y²)²-2(X²-Y²)Z²+Z^4
=(X²-Y²-Z²)²
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