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Simplifying
(-1i)(-7)(-7i) = 0
Remove parenthesis around (-1i)
-1i(-7)(-7i) = 0
Remove parenthesis around (-7i)
-1i * -7 * -7i = 0
Reorder the terms for easier multiplication:
-1 * -7 * -7i * i = 0
Multiply -1 * -7
7 * -7i * i = 0
Multiply 7 * -7
-49i * i = 0
Multiply i * i
-49i2 = 0
Solving
-49i2 = 0
Solving for variable 'i'.
Move all terms containing i to the left, all other terms to the right.
Divide each side by '-49'.
i2 = 0
Simplifying
i2 = 0
Take the square root of each side:
i = {0}
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