Step 1 :Combine exponents in the denominator: \(\frac{1}{s^{6}\cdot s^{4}} = \frac{1}{s^{(6+4)}} = \frac{1}{s^{10}}\)
Step 2 :Rewrite the fraction as a negative exponent: \(\frac{1}{s^{10}} = s^{-10}\)
Step 3 :Apply the 15th root: \(\sqrt[15]{s^{-10}} = s^{\frac{-10}{15}} = s^{\frac{-2}{3}}\)