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(x+2y)²(x²-2xy+4y²)²我要详细解答,用适当的乘法公式
人气:406 ℃ 时间:2020-02-06 04:06:19
解答
(x+2y)²(x²-2xy+4y²)²
=[(x+2y)(x²-2xy+4y²)]²
=[x³+(2y)³]²
=x^6+2x³(2y)³+(2y)^6
=x^6+16x³y³+64y^6
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