(2m+n-p)(2m-n+p),这道计算题该怎样做?

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(2m+n-p)(2m-n+p),这道计算题该怎样做?(2m+n-p)(2m-n+p),这道计算题该怎样做?(2m+n-p)(2m-n+p),这道计算题该怎样做?(2m+n-p)(2m-n+p)=(2

(2m+n-p)(2m-n+p),这道计算题该怎样做?
(2m+n-p)(2m-n+p),这道计算题该怎样做?

(2m+n-p)(2m-n+p),这道计算题该怎样做?

(2m+n-p)(2m-n+p)
=(2m)²-(n-p)²
=4m²-n²+2np-p²