Respuesta :

Simple....

you have [tex] x^{2} -2x-4=0[/tex]

To solve...you must complete the square...

use [tex]( \frac{b}{2} ) ^{2} [/tex] to create a new term...

x=1(+/-)[tex] \sqrt{5} [/tex]

Thus, your answer.

(Or, x≈3.23606797, -1.236067967)