91Ó°ÊÓ

In the following exercises, multiply the rational expressions.

$\frac{2d^2+d-3}{d^2-16}.\frac{d^2-8d+16}{2d^2-9d-18}$

In the following exercises, perform the indicated operations.

$\frac{7x^2}{x^2-9}+\frac{21}{x^2-9}$

In the following exercises, perform the indicated operations.

$\frac{x^2}{x-7}-\frac{3x+28}{x-7}$

In the following exercises, perform the indicated operations.

$\frac{y^2}{y+11}-\frac{121}{y+11}$

In the following exercises, perform the indicated operations.

$\frac{4q^2-q+3}{q^2+6q+5}-\frac{3q^2-q-6}{q^2+6q+5}$

In the following exercises, add and subtract.

$\frac{18w}{6w-1}+\frac{3w-2}{1-6w}$

In the following exercises, add and subtract.

$\frac{a^2+3a}{a^2-4}-\frac{3a-8}{4-a^2}$

In the following exercises, add and subtract.

$\frac{2b^2+3b-15}{b^2-49}-\frac{b^2+16b-1}{49-b^2}$

In the following exercises, add and subtract.

$\frac{8y^2-10y+7}{2y-5}+\frac{2y^2+7y+2}{5-2y}$

In the following exercises, find the LCD.

$\frac{7}{a^2-3a-10},\frac{3a}{a^2-a-20}$