(X-3)(X十2)=6怎么解?
问题描述:
(X-3)(X十2)=6怎么解?
答
(X-3)(X十2)=6
x²-x-6=6
x²-x-12=0
(x-4)(x+3)=0
x-4=0,x+3=0
x1=4,x2=-3