(x-4)(x+3) (x-6)(x+5)两道题的解要步骤

问题描述:

(x-4)(x+3) (x-6)(x+5)两道题的解要步骤

(x-4)(x+3)=0
x1=4
x2=-3
(x-6)(x+5)=0
x1=6
x2=-5