Evaluate
-4+9i
Real Part
-4
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-3-4+3+\left(12-7+4\right)i
Combine the real and imaginary parts.
-4+9i
Do the additions.
Re(-3-4+3+\left(12-7+4\right)i)
Combine the real and imaginary parts in -3+12i+\left(-4-7i\right)+\left(3+4i\right).
Re(-4+9i)
Do the additions in -3-4+3+\left(12-7+4\right)i.
-4
The real part of -4+9i is -4.
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