Question

Equacao do 2°grau 5x2+7x-6=0 pfv mim ajudem

Answer 1

$5x^{2} +7x-6=0$
$x=\frac{-b+/- \sqrt{-4ac} }{2a} = \frac{-7+/- \sqrt{7^2-4*5*-6} }{2*5} = \frac{-7+/- \sqrt{169} }{10} = \frac{-7+/-13}{10}$
$x'= \frac{-7+13}{10} =0,6$
$x"= \frac{-7-13}{10} =-2$