(x+2)平方-10(x+2)+25=0(适当方法)
问题描述:
(x+2)平方-10(x+2)+25=0(适当方法)
答
(x+2)平方-10(x+2)+25=0
(x+2-5)²=0
(x-3)²=0
x-3=0
x=3