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Simplifying
(-7i)(-8i) = 0
Remove parenthesis around (-7i)
-7i(-8i) = 0
Remove parenthesis around (-8i)
-7i * -8i = 0
Reorder the terms for easier multiplication:
-7 * -8i * i = 0
Multiply -7 * -8
56i * i = 0
Multiply i * i
56i2 = 0
Solving
56i2 = 0
Solving for variable 'i'.
Move all terms containing i to the left, all other terms to the right.
Divide each side by '56'.
i2 = 0
Simplifying
i2 = 0
Take the square root of each side:
i = {0}
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