问题
解答题
解方程:(x+2)2-3(x+2)+2=0.
答案
令x+2=t,原方程可化为t2-3t+2=0,
(t-1)(t-2)=0,解得t1=1,t2=2,
∴x+2=1或x+2=2,
∴x1=-1,x2=0.
解方程:(x+2)2-3(x+2)+2=0.
令x+2=t,原方程可化为t2-3t+2=0,
(t-1)(t-2)=0,解得t1=1,t2=2,
∴x+2=1或x+2=2,
∴x1=-1,x2=0.