(2y+1)²+3(2y+1)+2=0 用因式分解法解方程
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(2y+1)²+3(2y+1)+2=0 用因式分解法解方程
(2y+1)²+3(2y+1)+2=0 用因式分解法解方程
(2y+1)²+3(2y+1)+2=0 用因式分解法解方程
(2y+1)²+3(2y+1)+2=0
((2y+1)+1)((2y+1)+2)=0
(2y+2)(2y+3)=0
2y+2=0或2y+3=0
y=-1或y=-3/2