Question

What is the solution of the equation?

-10 + sqrt x+8 = -4

a. 44
b. 36
c-2
d.28

Answer 1

V(x + 8) = 10 - 4 = 6. Square the 2 sides
(x + 8) = 36 -> x = .......

Answer 2

You mean \[\sqrt{x}\]
in present case we have sqrt x=-2 so X is a complex number 2i or -2i

Answer 3

I'm so lost. My book doesnt teach me how to square root things but i think i can figure it out

Answer 4

\[-10 + \sqrt x + 8 = -4\]
Add 10 on both sides
\[\sqrt x + 8 = 6\]
Minus 8 from both sides
\[\sqrt x = -2\]
Square both sides
\[x = (-2)^2\]
Then
\[x = 4\]