3m^2n^2+12mn+x(mn+2)^2因式分解.
问题描述:
3m^2n^2+12mn+x(mn+2)^2因式分解.
同上.
答
=3m^2n^2+12mn+x(m^2n^2+4mn+4)
=mn(3mn+mnx+12+8x)