Find the length of the missing side if necessary express your answer in simplest radical form

Given the statements, "a square root of 16 is 4," and "a square root of 9 is -3," complete the following blanks with the correct truth-values. p is and q is , so the statement, "a square root of 16 is 4 or a square root of 9 is -3" is .

When y’all answer can y’all explain too !

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b