Simplify. \[ \left(\frac{a^{3}}{-8 b^{4}}\right)^{2} \] Write your answer without pare

Step 1 ：Given the expression \(\left(\frac{a^{3}}{-8 b^{4}}\right)^{2}\)

Step 2 ：We can simplify this by applying the power of a power rule, which states that \((a^m)^n = a^{m*n}\).

Step 3 ：Applying this rule to each term in the fraction, we get \(\frac{a^{6}}{64 b^{8}}\)

Step 4 ：However, since the denominator was negative, the square of it will be positive, so the simplified form of the given expression is \(\boxed{\frac{a^{6}}{64 b^{8}}\)