Khan Academy

Powers of the imaginary unit (K-A)

Powers of the imaginary unit-link (K-A)

Simplifying roots of negative numbers (K-A)

Classifying complex numbers (K-A)

Intro to complex numbers (K-A)

Intro to complex numbers-video (K-A)

Plotting numbers on the complex plane (K-A)

The complex plane-link (K-A)

Adding complex numbers (K-A)

Subtracting complex numbers (K-A)

Complex number operations review (K-A)

Multiplying complex numbers-link (K-A)

Multiplying complex numbers-video (K-A)

Features of a circle from its graph (K-A)

Graphing circles from features (K-A)

Features of a circle from its standard equation (K-A)

Graphing a circle from its standard equation (K-A)

Writing standard equation of a circle (K-A)

Circle equation review (K-A)

Features of a circle from its expanded equation (K-A)

Equation of a parabola from focus & directrix (K-A)

Focus & directrix of a parabola from equation (K-A)

Intro to focus & directrix (K-A)

Parabola focus & directrix review (K-A)

Rewriting exponential expressions (K-A)