91影视

In the following exercises, perform the indicated operations.

$\frac{5t^2+4t+3}{t^2-25}-\frac{4t^2-8t-32}{t^2-25}$

In the following exercises, factor completely

$24a^4-9a^3$.

In the following exercises, write each expression in terms of i and simplify if possible.$$\begin{gathered} a\left)\sqrt{-16} \\ b\right)\sqrt{-11} \\ c)\sqrt{-8} \end{gathered}$$

In the following exercises, 鈸� identify the center and radius, and 鈸� graph.

$x^2+y^2+2x+6y+9=0$

In the following exercises, add or subtract.

$\sqrt{-75}+\sqrt{-48}$

In the following exercises, add or subtract$(1+3i)+(7+4i)$

In the following exercises, perform the indicated operations

$\frac{7m+3}{m+2}-5$

In the following exercises, 鈸� identify the center and radius, and 鈸� graph.

$x^2+y^2-6x-8y=0$

Use the Zero Product Property in the following exercises to solve.

$(a-3)(a+7)=0$

In the following exercises, perform the indicated operations .

$\frac{5}{x^{2}y}+\frac{7}{20x{y}^3}$