Add or subtract terms whenever possible. $3\(\sqrt{8}\) - \(\sqrt{32}\) + 3\(\sqrt{72}\) - \(\sqrt{75}\)$

Write each expression without negative exponents, and evaluate if possible. Assume all variables represent nonzero real numbers. (4x)^-2

Find each root. ∜(5 + 2m)⁴

Use the rules for radicals to perform the indicated operations. Assume all variable expressions represent positive real numbers. √7 • √28

Write each expression without negative exponents, and evaluate if possible. Assume all variables represent nonzero real numbers. -a^-3