Question

5x^2-3x-2=0

Formula de bhaskara

Answer 1

5x^2-3x-2=0

A = 5              B = -3             C = -2

$\frac{-B\sqrt{B^2-4(AC)} }{2A}$

$\frac{3\sqrt{(-3)^2-4\times(5\times-2)} }{2\times5}$

$\frac{3\sqrt{9-4\times10} }{10}$

$\frac{3\\sqrt{49} }{10}$

$\frac{3\pm\sqrt{49} }{10}$

$x=\frac{3\pm7}{10}$

$x = 1 ; - \frac{2}{5}$