Evaluate
12+3i
Real Part
12
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4+8+\left(-2+5\right)i
Combine the real and imaginary parts in numbers 4-2i and 8+5i.
12+3i
Add 4 to 8. Add -2 to 5.
Re(4+8+\left(-2+5\right)i)
Combine the real and imaginary parts in numbers 4-2i and 8+5i.
Re(12+3i)
Add 4 to 8. Add -2 to 5.
12
The real part of 12+3i is 12.
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