Respuesta :

JoyMark

Answer:

-√5/3

Step-by-step explanation:

x^2 - 4x - 5 = 0

             +5   +5

√x^2 - 4x = √5

x - 4x = √5

-3x = √5

-----     ----

 -3      -3

x    =  -√5/3

The answer is -√5/3.
The quadratic equation answer is: x^1 = -1; x^2=5 and the number of solutions are 2 real solutions. Hope this helps :)