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rezolvati ecuatia in R 2x^2-x-3=0
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Răspuns :

2x²-x-3=0
2x²+2x-3x-3=0
2x(x+1)-3(x+1)=0
(x+1)(2x-3)=0
x+1=0 ⇒x1=-1
2x-3=0 ⇒ x2= 3/2
S:x∈{-1,3/2}

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