(-1*3j)*(-1*-3j)=

Solution for (-1*3j)*(-1*-3j)= equation:

Simplifying
(-1 * 3j)(-1 * -3j) = 0

Multiply -1 * 3
(-3j)(-1 * -3j) = 0

Remove parenthesis around (-3j)
-3j(-1 * -3j) = 0

Multiply -1 * -3
-3j(3j) = 0

Remove parenthesis around (3j)
-3j * 3j = 0

Reorder the terms for easier multiplication:
-3 * 3j * j = 0

Multiply -3 * 3
-9j * j = 0

Multiply j * j
-9j2 = 0

Solving
-9j2 = 0

Solving for variable 'j'.

Move all terms containing j to the left, all other terms to the right.

Divide each side by '-9'.
j2 = 0

Simplifying
j2 = 0

Take the square root of each side:
j = {0}