Question 24694
To "undo" the square root, you must begin by squaring both sides:


{{{(sqrt(x^3)) = 8}}}


{{{(sqrt(x^3))^2 = 8^2}}}

{{{x^3 = 64}}}


{{{x= 4}}} (assuming that you are looking for REAL (not complex!) solutions)


R^2 at SCC