Find the product of the given complex number and its conjugate.
$-7-i$

Find the sum. Express your answer in standard form.

$5\left(4+7i\right)+6\left(3-2i\right)$

Perform the indicated operation. Express your answer in standard form.

$\left(3+8i\right)^2$

Find the product. Express your answer in standard form.

$2i\left(9-4i\right)\left(6+5i\right)$

Find the product of the given complex number and its conjugate.

$4-5i$

Find the quotient. Express your answer in standard form.  

$\frac{6+i}{4-2i}$

Find the quotient. Express your answer in standard form. 

$\frac{-5+3i}{-7-4i}$

Identify the real and imaginary parts of each complex number.

$-4-9i$

Identify the real and imaginary parts of each complex number.

$3+2i\sqrt3$