X-2)(X-3)=12
x^2-5x+6=12
x^2-5x-6=0
(x-6)(x+1)=0
x=6或者x=-1
(x-2)(x-3)=12
X^2-5X+6=12
X^2-5X-6=0
(X-6)(X+1)=0
X-6=0或X+1=0
解得:晌芹或X1=宴伍6,X2=首宽-1
(x-2)(x-3)=12
x^2-5x+6-12=0
x^2-5x-6=0
(x+1)(x-6)=0
x=-1 or 6
(x-2)(x-3)=12
x^2-5x+6-12=0
x^2-5x-6=0
(x+1)(x-6)=0
X-6=0或兆饥X+1=0
解得:X1=袭缺6,族禅返X2=-1
(X-2)(X-3)=12
x^2-5x+6=12
x^2-5x-6=0
(x-6)(x+1)=0
x=6或者x=-1