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Simplifying
(9i)(3i) = 0
Remove parenthesis around (9i)
9i(3i) = 0
Remove parenthesis around (3i)
9i * 3i = 0
Reorder the terms for easier multiplication:
9 * 3i * i = 0
Multiply 9 * 3
27i * i = 0
Multiply i * i
27i2 = 0
Solving
27i2 = 0
Solving for variable 'i'.
Move all terms containing i to the left, all other terms to the right.
Divide each side by '27'.
i2 = 0
Simplifying
i2 = 0
Take the square root of each side:
i = {0}
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