(1.) Using exponential notation, we can write ^3√19 as …. (2.) Write the radical expression using exponents….
^7√ 2^2

(3.) Simplify each expression, and eliminate any negative exponents.
(7a/b^7)^-1

(4.) Simplify the expression and eliminate any negative exponent(s). Assume that all letters denote positive numbers.
(Picture attached)