Question

Resolva a equação de 2° grau: x2+x-6=​

Answer 1

$\Delta=1+24=25$

$x=\frac{-1±5}{2}$

$x'=\frac{-1+5}{2}=\frac{4}{2}=2$

$x''=\frac{-1-5}{2}=-\frac{6}{2}=-3$

$s=\left\{(2,-3)\right\}$