Question

Tarea respuesta a x2+x=20

Answer 1

Hola...
              $x^{2}+x=20$
                       x + x = $\sqrt{20}$
                         2x   = $2 \sqrt{5}$
                           x = $\frac{2 \sqrt{5}}{2}$
                           X= $\sqrt{5}$