Topics
2. Complex Numbers & Quadratics
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United States of AmericaPA
High School Core Standards - Algebra II Assessment Anchors

2.06 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

CC.2.1.HS.F.6

Extend the knowledge of arithmetic operations and apply to complex numbers.

A2.1.1.1.1

Simplify/write square roots in terms of i (e.g., √-24 = 2i√6).

A2.1.1.1.2

Simplify/evaluate expressions involving powers of i (e.g.,i^6 +i^3 =–1–i).

A2.1.1.2.1

Add and subtract complex numbers (e.g., (7 – 3i) – (2 + i) = 5 – 4i).

A2.1.1.2.2

Multiply and divide complex numbers (e.g., (7 – 3i)(2 + i) = 17 + i).

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