(p-2q)^3=-(2q-p)^3有哪两种处理方法?
1个回答
(1)
(p-2q)^3=[-1×(2q-p)]^3=-(2q-p)^3
(2)
(p-2q)^3=(-1)³(2q-p)^3=-(2q-p)^3
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