(m2-1/2m+1/4)(m2+1/2m+1/4)(m-1/2)(m+1/2)=?(过程）
问题描述：
(m2-1/2m+1/4)(m2+1/2m+1/4)(m-1/2)(m+1/2)=?(过程）
答
上式=(m-1/2)^2(m+1/2)^2(m-1/2)(m+1/2)
=(m-1/2)^3(m+1/2)^3
=((m-1/2)(m+1/2))^3
=(m^2-1/4)^3(a-b)^2=a^2-2ab+b^2(m-1/2)^2=m^2-m+1/4不等于m2-1/2m+1/4very sorry