因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
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因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
-5x³y(x-y)³+20y[x²(y-x)]²
=-5x³y(x-y)³ +20yx⁴(x-y)²
=-5x³y(x-y)²[(x-y)-4x]
=-5x³y(x-y)²(-3x-y)
=5x³y(x-y)²(3x+y)