Question

X^2-2x−4=0 please leave ans in surd form and simplify​

Answer 1

Hi there!

How are you?

Answer:

$\boxed{x = + \sqrt{5} |Or| x = 1 - \sqrt{5} }$

Step-by-step explanation:

First you have to use quadratic formula with $a=1, b=-2, c=-4.$

$x = \frac{-b \± \sqrt{b^2 -4ac} }{2a}$

$x = \frac{-(-2) \± \sqrt{(-2)^2 - 4(1)(-4)} }{2(1)}$

$x = \frac{\sqrt{^2\± \sqrt{20} } }{2}$

$x = + \sqrt{5}$ or $x = 1 - \sqrt{5}$

Hvae a good day/night!

Answer 2

Step-by-step explanation:

using the quadratic formula......