Solve the following equation equation for (x^2 + frac{2x}{r^2} + frac{1}{r^4}) = 0

A.
r^{2} 
B.
(frac{1}{r^4}) 
C.
(frac{1}{r^2}) 
D.
1 – r
Correct Answer: Option C
Explanation
(x^2 + frac{2x}{r^2}) + (frac{1}{r^4}) = 0
(x + (frac{1}{r^2})) = 0
x + (frac{1}{r^2}) = 0
x = (frac{1}{r^2})