(2y-1)²+3=6y
问题描述:
(2y-1)²+3=6y
答
(2y-1)²+3=6y
4y^2+1-4y+3-6y=0
4y^2+4-10y=0
2y^2+2-5y=0
(y-2)(2y-1)=0
y=2或者y=1/2