x^2 -(4a-1)x+3a^2 -a
问题描述:
x^2 -(4a-1)x+3a^2 -a
答
x^2 -(4a-1)x+3a^2 -a=x^2 -(4a-1)x+a(3a-1)=(x+3a-1)(x+a)
x^2 -(4a-1)x+3a^2 -a
x^2 -(4a-1)x+3a^2 -a=x^2 -(4a-1)x+a(3a-1)=(x+3a-1)(x+a)