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| Math Central | Quandaries & Queries |
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Question from Michael, a student: express the following complex numbers in standard form (2+3i)+(5-2i) |
Hi Michael,
A complex number written in standard form is $a + bi$ where $a$ and $b$ are real numbers. $a$ is called the real part and $b$ is called the imaginary part. You can add complex numbers by adding the real parts and adding the imaginary parts. Thus $(7 + 4i) + (-3 + 9i) = (7 - 3) + (4 + 9)i = 4 + 13i.$
I hope this helps,
Penny
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