SOLUTION: Compute (-5 + 3i) + (-5 - 3i). Express your answer in the form $a+bi$, where $a$ and $b$ are real numbers.

Question 1209621: Compute (-5 + 3i) + (-5 - 3i).
Express your answer in the form $a+bi$, where $a$ and $b$ are real numbers.
Answer by ikleyn(52747) (Show Source): You can put this solution on YOUR website!
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The sum of real parts is  -5 + (-5) = -10.


The sum of imaginary parts is  3i + (-3i) = 0.    

Imaginary parts cancel each other.


The sum of the given complex numbers is the real number -10.


In form  a + bi, it is  -10 + 0*i.

Thus a = -10, b = 0.

Solved, with all necessary explanations.

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