91影视

In the following exercises, write each expression in terms of i and simplify if possible$$\begin{gathered} a\left)\sqrt{-49} \\ b\right)\sqrt{-15} \\ c)\sqrt{-75} \end{gathered}$$

In the following exercises, add or subtract.$\sqrt{-12}+\sqrt{-75}$

In the following exercises, add or subtract$\sqrt{-50}+\sqrt{-18}$

In the following exercises, add or subtract$\sqrt{-72}+\sqrt{-8}$

In the following exercise, add.

$\left(6+2i\right)+\left(3-4i\right)$

In the following exercise, add.

$\left(8-i\right)+\left(6+3i\right)$

In the following exercise, simplify using absolute values as necessary.

$鈸�\sqrt{81x^{36}}鈸�-\sqrt{25x^2}$

In the following exercise, add.

$\left(7-4i\right)+\left(-2-6i\right)$

In the following exercise, subtract.

$\left(1-4i\right)-\left(3-6i\right)$

In the following exercise, subtract.

$\left(8-4i\right)-\left(3+7i\right)$