f(x)=3x三次方-13x二次方-11x+5{一次因式检验法}急求解答
问题描述：
f(x)=3x三次方-13x二次方-11x+5{一次因式检验法}急求解答
答
=3x^2-15x^2+2x^2-10x-x+5
=(x-5)(3x^2+2x-1)
=(x-5)(x+1)(3x-1)