x的五次方加-2x的三次方减八x,怎么因式分解?

2025-02-22 10:57:44
推荐回答(1个)
回答1:

=X(x^4一2X^2一8)
=X(X^2一4)(x^2+2)
=X(x^2+2)(X十2)(x一2)