91Ó°ÊÓ

Evaluate each product or quotient. Express the results in scientific notations.

$\frac{\mathbf{8}\mathbf{.}\mathbf{8}×{\mathbf{10}}^2}{\mathbf{4}×{\mathbf{10}}^{−\mathbf{4}}}$

Evaluate each expression.

${\left(−4\right)}^{\mathbf{3}}$

Express each number in scientific notation.

$\mathbf{0}\mathbf{.0042}$

ASTRONOMY The average distance from Mercury to the Sun is 35,980,000 miles. Express this distance in scientific notation.

Simplify each expression.

$\left(−\mathbf{4}a{b}^4\right)\left(−\mathbf{5}{a}^5{b}^2\right)$

Evaluate each expression.

${\left(\frac{2}{3}\right)}^{\mathbf{2}}$

Simplify the expression

${\left(4a^4{b}^{9}c\right)}^2$

Express each number in scientific notation.

234,000

Find each sum or difference.

$\left(x+\mathbf{5}\right)+\left(x^2−\mathbf{3}x+\mathbf{7}\right)$

Simplify the expression

${\left(−2f^2{g}^3{h}^2\right)}^3$