(-6i)(-6i)=36

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Solution for (-6i)(-6i)=36 equation: 


Simplifying
(-6i)(-6i) = 36

Remove parenthesis around (-6i)
-6i(-6i) = 36

Remove parenthesis around (-6i)
-6i * -6i = 36

Reorder the terms for easier multiplication:
-6 * -6i * i = 36

Multiply -6 * -6
36i * i = 36

Multiply i * i
36i2 = 36

Solving
36i2 = 36

Solving for variable 'i'.

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

Divide each side by '36'.
i2 = 1

Simplifying
i2 = 1

Take the square root of each side:
i = {-1, 1}

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