Imaginary and Complex Numbers

 $\sqrt{144}-\sqrt{-90}+\sqrt{16}+\sqrt{-10}$  

 $-\sqrt{36}+\sqrt{-36}+\sqrt{16}+\sqrt{-9}$  

 $-\sqrt{100}+\sqrt{-9}+\sqrt{9}-\sqrt{-16}$  

Write $\sqrt{-192}$  in simplest form.

Write $\sqrt{-10}$ in simplest radical form.  

Write $\sqrt{-200}$ in simplest radical form. 

Simplify the expression to a + bi form: $\left(2-i\right)-\left(-4+8i\right)$  

Simplify the expression to a + bi form: $\left(3+i\right)+\left(-12-9i\right)$  

Simplify the expression to a + bi form: $\left(4-2i\right)-\left(4-7i\right)$  

Fully simplify. $\left(6\sqrt{-7}\right)\left(\sqrt{-3}\right)$