Question

Resolva a equacao do 2 grau 3(x²-1)=2x (x+1)..Me ajudem pfv. ...

Answer 1

3x²-3=2x²+2x 3x²-3-2x²-2x=0 x²-2x-3=0 (delta)= (-2)²-4.1.(-3) (delta)= 4+12 (delta)= 16 x= - (-2) +/- 4 /2 x1= 2+4/2 x1=6/2 x1=3 x2= 2-4/2 x2= -2/2 x2= - 1