Answer:
x = 144
Step-by-step explanation:
[tex] x^\frac{1}{2} - 4 = 8 [/tex]
Add 4 to both sides.
[tex] x^\frac{1}{2} = 12 [/tex]
Square both sides since x^(1/2) is the same as sqrt(x).
[tex] (x^\frac{1}{2})^2 = (12)^2 [/tex]
[tex] x^{\frac{1}{2} \times 2} = 144 [/tex]
[tex] x^1 = 144 [/tex]
[tex] x = 144 [/tex]
