SOLUTION: Compute (-5 + 4i) + (-5 - 4i). Express your answer in the form $a+bi$, where $a$ and $b$ are real numbers.

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Compute (-5 + 4i) + (-5 - 4i). Express your answer in the form $a+bi$, where $a$ and $b$ are real numbers.      Log On


   

Question 1209622: Compute (-5 + 4i) + (-5 - 4i).

Express your answer in the form $a+bi$, where $a$ and $b$ are real numbers.
Answer by greenestamps(13196) About Me  (Show Source):
You can put this solution on YOUR website!


%28-5%2B4i%29%2B%28-5-4i%29

"Combine like terms" -- in this case, combine the real parts and combine the imaginary parts.

%28-5%2B%28-5%29%29%2B%284i%2B%28-4i%29%29
-10%2B0i

ANSWER: -10+0i