To solve the equation \( 36x^2 = 0 \), we can divide both sides by 36:
\[ x^2 = 0 \]
Taking the square root of both sides, we find:
\[ x = 0 \]
Thus, the only solution is \( x = 0 \).
In set notation, the solution set is:
\({0}\)
So the correct response is:
{0} (left brace 0 right brace)