因式分解 -16m^2+24m^4-8m^6=__________(要过程)

问题描述:

因式分解 -16m^2+24m^4-8m^6=__________(要过程)

-16m^2+24m^4-8m^6
=8m^2(-2+3m^2-m^4)
=8m^2(-2+2m^2+m^2-m^4)
=-8m^2(m^4-m^2-2m^2+2)
=-8m^2[m^2(m^2-1)-2(m^2-1)]
=-8m^2(m+1)(m-1)(m^2-2)