(1+2j)(2)=

Solution for (1+2j)(2)= equation:

Simplifying
(1 + 2j)(2) = 0

Reorder the terms for easier multiplication:
2(1 + 2j) = 0
(1 * 2 + 2j * 2) = 0
(2 + 4j) = 0

Solving
2 + 4j = 0

Solving for variable 'j'.

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

Add '-2' to each side of the equation.
2 + -2 + 4j = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 4j = 0 + -2
4j = 0 + -2

Combine like terms: 0 + -2 = -2
4j = -2

Divide each side by '4'.
j = -0.5

Simplifying
j = -0.5