一道因式分解 a²(x-y)²-b(y-x)³

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一道因式分解 a²(x-y)²-b(y-x)³
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一道因式分解 a²(x-y)²-b(y-x)³
一道因式分解 a²(x-y)²-b(y-x)³

一道因式分解 a²(x-y)²-b(y-x)³
a²(x-y)²-b(y-x)³
=a²(y-x)²-b(y-x)³
=(y-x)²[a²-b(y-x)]
=(y-x)²(a²-by+bx)

a²(x-y)² - b(y-x)³ =
a²(x-y)² - [b * -(x-y)³] =
a²(x-y)² + b(x-y)³ =
(x-y)² [a² + b(x-y)] =
(x-y)² (a² + bx - by)