Write down an equivalent expression that contains fractional exponent:

$\frac{1}{2}$

Write down an equivalent expression that contains fractional exponent:

$\frac{2}{3}$

Simplify:

$3^2\times 9^{-2}$

Simplify:

$4^{\frac{1}{4}}\times 2^{\frac{3}{2}}$

Simplify:

$3^{\frac{1}{2}}\times {27}^{\frac{1}{2}}$

Simplify:

${16}^{\frac{1}{3}}÷2^{\frac{1}{3}}$

Use the rules of radicals to simplify:

$\sqrt{8}\times \sqrt{2}$

Use the rules of radicals to simplify:

$\frac{\sqrt{8}}{\sqrt{2}}$

Simplify the following by writing $8$ as a power of $2$, and using the rules of exponents:

$8^{\frac{1}{2}}\times 2^{\frac{1}{2}}$