Taking the square root always yields a positive and negative answer. Why is this the case?
Example:
root {9} = -3 and 3.
Both -3 and 3 are square roots of 9. The operator/function $\sqrt{.}$ is defined to return the non-negative square root of its argument (or the principle value if complex)
There is no context to consider. You are being asked straight-up for value(s) of
Look at these steps worked out here at:
www.quickmath.com
Type: 9^(1/2)
Then click "Simplify" and look at the steps.