Dikali 3
Jadi 3x^2+2x-1=0
(3x-1)(x+1)=0
Maka (x+1)=0
X=-1
Atau
3x-1=0
3x=1
X=1/3
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Dikali 3
Jadi 3x^2+2x-1=0
(3x-1)(x+1)=0
Maka (x+1)=0
X=-1
Atau
3x-1=0
3x=1
X=1/3