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