(x-3)平方+10(x-3)=12怎么解
问题描述:
(x-3)平方+10(x-3)=12怎么解
答
(x-3)²+10(x-3)+25=12+25
[(x-3)+5]²=37
x+2=±√37
x=-2-√37,x=-2+√37