=-xy/2*(4x²-4xy+y²)
=-xy/2*(2x-y)²
-2x的三次方y+2x的二次方y的二次方-二分之一xy的三次方 分解因式
-2x的三次方y+2x的二次方y的二次方-二分之一xy的三次方 分解因式
数学人气:569 ℃时间:2020-01-29 14:34:15
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