Evaluate
13+7i
Real Part
13
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1+2i+\left(-5+12i\right)\left(-i\right)
Calculate 2+3i to the power of 2 and get -5+12i.
1+2i+\left(12+5i\right)
Multiply -5+12i and -i to get 12+5i.
13+7i
Add 1+2i and 12+5i to get 13+7i.
Re(1+2i+\left(-5+12i\right)\left(-i\right))
Calculate 2+3i to the power of 2 and get -5+12i.
Re(1+2i+\left(12+5i\right))
Multiply -5+12i and -i to get 12+5i.
Re(13+7i)
Add 1+2i and 12+5i to get 13+7i.
13
The real part of 13+7i is 13.
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