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[(x-y)^7]÷(y-x)³-[4(x-y)²]²
人气:337 ℃ 时间:2020-05-24 12:38:10
解答
[(x-y)^7]÷(y-x)³-[4(x-y)²]²
=[(x-y)^7]÷[-(x-y)³-16(x-y)^4
=-(x-y)^4-16(x-y)^4
=-17(x-y)^4
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