Math CentralQuandaries & Queries


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,

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