N-CN.A. Perform arithmetic operations with complex numbers.

• Complex number patterns
• Computations with Complex Numbers

N-CN.A.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.

• Complex number patterns
• Vertex of a parabola with complex roots

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

• Complex Cube and Fourth Roots of 1
• Complex Square Roots
• Powers of a complex number

N-CN.A.3. Find the conjugate of a complex number; use conjugates to find moduli and quotients of complex numbers.

• No tasks yet illustrate this standard.