Back to The Complex Number System — Problem 2 · Task Set 28

HSN.CN Tutor Intake — Complex Numbers

This short check helps your tutor understand where to start with complex numbers. Answer each question on your own without notes or a calculator. If you are unsure, give your best try — the goal is to find what to work on together, not to grade you.

Grade 10·12 problems·~14 min·Common Core Math - HS Number and Quantity·domain·cn

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Concepts

A complex number is written in standard form $a + bi$ , where
$a$ and $b$ are real numbers. For the complex number $-5 + 3i$ ,
which statement is correct?

The real part is $-5$ and the imaginary part is $3i$ .

The real part is $-5$ and the imaginary part is $3$ .

The real part is $3$ and the imaginary part is $-5$ .

$-5 + 3i$ is not a complex number because real numbers and imaginary numbers cannot be added.