Topics
2. Polynomials
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United States of AmericaUT
Math II

2.10 Complex numbers

Lesson
Practice

Interactive practice questions

What type of number can be written in the form $a+bi$a+bi?

A whole number

A

A rational number

B

A complex number

C

A real number

D
Easy
< 1min

What is a pure imaginary number?

Easy
< 1min

Answer the following.

Easy
< 1min

Consider the complex number $-i\sqrt{10}$−i√10.

Easy
< 1min
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Outcomes

II.N.CN.1

Know there is a complex number I such that i^2 = -1, and every complex number has the form a bi with a and b real.

II.N.CN.2

Use the relation i^2 = -1 and the commutative, associative, and distributive properties to add, subtract, and multiply complex numbers.

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