Evaluate
-42i
Real Part
0
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-21\times \left(2i\right)
Multiply -3i and -7i to get -21.
-42i
Multiply -21 and 2i to get -42i.
Re(-21\times \left(2i\right))
Multiply -3i and -7i to get -21.
Re(-42i)
Multiply -21 and 2i to get -42i.
0
The real part of -42i is 0.
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