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rewrite with rational exponents (square root symbol) 2

Quote: Originally Posted by junebug017 rewrite with rational exponents (square root symbol) 2 For any number $\displaystyle x > 0$ we have $\displaystyle \displaystyle \sqrt[b]{x^{a}}=x^{\frac{a}{b}}$ Also remember that $\displaystyle \sqrt{x}=\sqrt[2]{x}$. That is, if the index on the radical is 2 they do not write it explicitly.