2Y²+4y=y+2 提公因式法解
问题描述:
2Y²+4y=y+2 提公因式法解
答
先移向至左边,然后得(2y-1)(y+2)=0
答
2y*2+4y=y+2
2y(y+2)-(y+2)=0
(2y-1)(y+2)=0
2y-1=0
y1=1/2
y2=-2
答
2Y²+4y=y+2
2Y²+4y-(y+2)=0
2y(y+2)-(y+2)=0
(y+2)(2y-1)=0
y1=-2 y2=1/2