6x² -3x -4 = 2x
6x² -3x -4 -2x = 0
6x² -5x -4 = 0 multiplicamos y dividimos el polinomio por el coeficiente de x² que es 6
([6x)² -5(6x) -24] /6 = 0
(6x -8) (6x +3)/6 = 2(3x -4) 3(2x +1)/6 = 0
(3x -4)(2x +1) =0
3x -4= 0
x = 4/3
2x +1 = 0
x = -1/2
probamos para x = 4/3
6(4/3)² -3(4/3) -4 = 2(4/3)
6*16/9 -4-4 = 8/3
96/9 -8 = 8/3
32/3 -8 = 8/3
32/3 -24/3 = 8/3
8/3 =8/3
probamos con x = -1/2
6(-1/2)² -3(-1/2)-4 = 2(-1/2)
6/4 +3/2 -4 = -1
3/2 +3/2 -4 = -1
6/2-4 = -1
3-4 = -1
-1 = -1
solucion (-1/2, 4/3)
