解方程:2y(y+1)-y(3y-2)+2y^2=y^2-2

2024-11-24 02:43:56
推荐回答(1个)
回答1:

2y(y+1)-y(3y-2)+2y^2=y^2-2
2y^2+2y-3y^2+2y+2y^2-y^2+2=0
4y+2=0
y=-0.5