原式=2(x+y)^2(x-y)
如果本题有什么不明白可以追问,
8(x+y)的八次方(x-y)的七次方÷[2(x+y)³(x-y)³]²
8(x+y)的八次方(x-y)的七次方÷[2(x+y)³(x-y)³]²
数学人气:732 ℃时间:2019-08-26 06:39:54
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