因式分解(2y+1)²+3(2y+1)+2=0

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因式分解(2y+1)²+3(2y+1)+2=0
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因式分解(2y+1)²+3(2y+1)+2=0
因式分解(2y+1)²+3(2y+1)+2=0

因式分解(2y+1)²+3(2y+1)+2=0
(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;
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(2y+1)²+3(2y+1)+2=0
[(2y+1)+2][(2y+1)+1]=0
(2y+3)(2y+2)=0
y=-3/2或y=-1