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Simplifying
(-3i)(-6i) = 0
Remove parenthesis around (-3i)
-3i(-6i) = 0
Remove parenthesis around (-6i)
-3i * -6i = 0
Reorder the terms for easier multiplication:
-3 * -6i * i = 0
Multiply -3 * -6
18i * i = 0
Multiply i * i
18i2 = 0
Solving
18i2 = 0
Solving for variable 'i'.
Move all terms containing i to the left, all other terms to the right.
Divide each side by '18'.
i2 = 0
Simplifying
i2 = 0
Take the square root of each side:
i = {0}
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