因式分解 t的三次方+3 t方+3t+2

问题描述:

因式分解 t的三次方+3 t方+3t+2

(t+2)(t方+t+1)

t的三次方+3 t方+3t+2
=(t的三次方+2 t方)+(t方+3t+2)
=t方(t+2)+(t+2)(t+1)
=(t+2)(t方+t+1)