High School · The Complex Number System

CCSS.MATH.CONTENT.HSN.CN.A.2

Use the relation i² = -1 and the commutative, associative, and distributive properties to add, subtract, and multiply complex numbers.

Read this standard on the official Common Core site

Lessons that teach this standard

• Complex Numbers: Arithmetic with i

  Why mathematicians introduced i with i² = −1, how to add, subtract and multiply complex numbers, how the powers of i cycle, and how the conjugate makes division possible.