Question

qual a conta de x²-5x/4-3/2=0 ?

Answer 1

$x^2- \frac{5x}{4} - \frac{3}{2} = 0 \\ \\ MMC = 4 \\ \\ 4x^2-5x-6=0 \\ \\ \Delta = (-5)^2-4(4)(-6) \\ \Delta = 25+96 \\ \Delta = 121 \\ \\ x = \frac{5~\pm~11}{8} \\ x' = 2 \\ x'' = - \frac{6}{8} = -\frac{3}{4}$


S = {⁻³/₄; 2}