Resolva equaçoes de 2 grau , identifique os coeficientes e determine as raizes se existir . x^{2} -5x + 6= 0
x^{2} - 8x + 12=0
x^{2} + 2x -8 =0
x^{2} -5x +8=0
2 x^{2} -8x+8=0
x^{2} -4x-5=0
x^{2} - 8x + 12=0
x^{2} + 2x -8 =0
x^{2} -5x +8=0
2 x^{2} -8x+8=0
x^{2} -4x-5=0