(3m+2n)的平方-(3m-2n)的平方

问题描述:

(3m+2n)的平方-(3m-2n)的平方

(3m+2n)²-(3m-2n)²=6m*4n=24mn

(3m+2n)的平方-(3m-2n)的平方
=(3m+2n)^2-(3m-2n)^2
=((3m+2n)+(3m-2n))((3m+2n)-(3m-2n))
=6m*4n
=24mn

祝你晚安!

(3m+2n)的平方-(3m-2n)的平方
=(3m+2n+3m-2n)(3m+2n-3m+2n)
=6m×4n
=24mn;
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