计算下面各题 [2(x²y)²-5x³y+3x²y²]÷x²
计算下面各题 [2(x²y)²-5x³y+3x²y²]÷x²
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[(3x+y)²-(3x-y)²]÷(4x-2y)计算 怎么做?
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(x-y)·2(x-y)²·3(x-y)³ 计算
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因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?