3(x^2-1)^2+18(1-x^2)+27因式分解
问题描述:
3(x^2-1)^2+18(1-x^2)+27因式分解
答
=3[(x^2-1)^2 -6(x^2-1)+9]
=3(x^2-1-3)^2
=3(x+2)^2 (x-2)^2