(-7-3i)(-7+3i)=

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Solution for (-7-3i)(-7+3i)= equation: 


Simplifying
(-7 + -3i)(-7 + 3i) = 0

Multiply (-7 + -3i) * (-7 + 3i)
(-7(-7 + 3i) + -3i * (-7 + 3i)) = 0
((-7 * -7 + 3i * -7) + -3i * (-7 + 3i)) = 0
((49 + -21i) + -3i * (-7 + 3i)) = 0
(49 + -21i + (-7 * -3i + 3i * -3i)) = 0
(49 + -21i + (21i + -9i2)) = 0

Combine like terms: -21i + 21i = 0
(49 + 0 + -9i2) = 0
(49 + -9i2) = 0

Solving
49 + -9i2 = 0

Solving for variable 'i'.

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

Add '-49' to each side of the equation.
49 + -49 + -9i2 = 0 + -49

Combine like terms: 49 + -49 = 0
0 + -9i2 = 0 + -49
-9i2 = 0 + -49

Combine like terms: 0 + -49 = -49
-9i2 = -49

Divide each side by '-9'.
i2 = 5.444444444

Simplifying
i2 = 5.444444444

Take the square root of each side:
i = {-2.333333333, 2.333333333}

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