Khan Academy

Manipulating formulas: temperature (K-A)

Intro to conic sections (K-A)

Expanding binomials (K-A)

Expanding binomials w/o Pascal's triangle (K-A)

Intro to the Binomial Theorem (K-A)

Pascal's triangle and binomial expansion (K-A)

Binomial expansion & combinatorics (K-A)

Binomial expansion & combinatorics (old) (K-A)

Pascal's triangle & combinatorics (K-A)

Factoring quadratics as (x+a)(x+b) (example 2) (K-A)

Factoring quadratics by grouping (K-A)

Factoring quadratics: common factor + grouping (K-A)

Factoring quadratics: negative common factor + grouping (K-A)

Factoring two-variable quadratics (K-A)

Factoring two-variable quadratics: grouping (K-A)

Factoring two-variable quadratics: rearranging (K-A)

Intro to grouping (K-A)

More examples of factoring quadratics as (x+a)(x+b) (K-A)

Factoring difference of squares: leading coefficient ≠ 1 (K-A)

Factoring difference of squares: two variables (example 2) (K-A)

Factoring difference of squares: two variables (K-A)

Factoring perfect squares (K-A)

Factoring perfect squares: 4th degree polynomial (K-A)

Factoring perfect squares: negative common factor (K-A)

Factoring difference of cubes (K-A)