(x-2)的二次方-3(2-x)+2x-4

问题描述:

(x-2)的二次方-3(2-x)+2x-4

答:
(x-2)的二次方-3(2-x)+2x-4
=(x-2)^2+3(x-2)+2(x-2)
=(x-2)^2+5(x-2)
=(x-2)(x-2+5)
=(x-2)(x+3)