计算:(m+1/2n)(-m+1/2n)

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计算:(m+1/2n)(-m+1/2n)计算:(m+1/2n)(-m+1/2n)计算:(m+1/2n)(-m+1/2n)ljx乖囧猫:(m+1/2n)(-m+1/2n)改变成(a+b)(a-b)的形式

计算:(m+1/2n)(-m+1/2n)
计算:(m+1/2n)(-m+1/2n)

计算:(m+1/2n)(-m+1/2n)
ljx乖囧猫:
(m+1/2n)(-m+1/2n)改变成(a+b)(a-b)的形式
=(1/2n+m)(1/2n-m)
=1/4n²-m²
祝好,再见.

(m+1/2n)(-m+1/2n)

=-(m+1/2n)(m-1/2n)
=-(m^2-1/4n^2)
=-m^2+1/4n^2

如果帮到你,请记得采纳,O(∩_∩)O谢谢

(m+1/2n)(-m+1/2n)
=(1/2n+m)(1/2n-m)
=1/4n²-m²