Question

square root of x^2-x-4 =x+2

i got stuck on this one can anyone help me get through it with steps?

Answer 1

\[\sqrt{x^2-x-4}=x+2???

Answer 2

square both sides and solve

Answer 3

i did i got stuck at x^2-x-4=x^2+4x+4

Answer 4

combine like terms to one side of equation, notice x^2 will cancel out

Answer 5

yes ill get 5x+8

Answer 6

0=5x+8

Answer 7

is the answer just -1.6?

Answer 8

-8 = 5x
-8/5 = x

Answer 9

-1.6?