Exponents and P...

Find the value of $x$ in: $\left (\dfrac {12}{13}\right )^{3x} \div \left (\dfrac {13}{12}\right )^{4} = \left (\dfrac {12}{13}\right )^{10}$

Which of the following expressions is equal to $x^{mn}$?

Express $\displaystyle \left ( 125 \right )^{5}$ as a power with the base $5$.

Convert $62000+39000$ to scietific form.

Simplify the following using law of exponents.
$9^2 \times 9^{18}\times 9^{10}$

Simplify the following using law of exponents.
$(-3)^3\times (-3)^{10}\times (-3)^7$

$(2^{5} \div 2^{2})=?$

$a\times a\times b\times b\times b$ can be written as 

The value of $\left(-\dfrac 23 \right)^4$ is equal to