(2-7j)(2+7j)=

Solution for (2-7j)(2+7j)= equation:

Simplifying
(2 + -7j)(2 + 7j) = 0

Multiply (2 + -7j) * (2 + 7j)
(2(2 + 7j) + -7j * (2 + 7j)) = 0
((2 * 2 + 7j * 2) + -7j * (2 + 7j)) = 0
((4 + 14j) + -7j * (2 + 7j)) = 0
(4 + 14j + (2 * -7j + 7j * -7j)) = 0
(4 + 14j + (-14j + -49j2)) = 0

Combine like terms: 14j + -14j = 0
(4 + 0 + -49j2) = 0
(4 + -49j2) = 0

Solving
4 + -49j2 = 0

Solving for variable 'j'.

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

Add '-4' to each side of the equation.
4 + -4 + -49j2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -49j2 = 0 + -4
-49j2 = 0 + -4

Combine like terms: 0 + -4 = -4
-49j2 = -4

Divide each side by '-49'.
j2 = 0.08163265306

Simplifying
j2 = 0.08163265306

Take the square root of each side:
j = {-0.285714286, 0.285714286}