The Quadratic Formula No One Taught You
15:26
A Fun Way to Solve Cubics: Vieta's Substitution
25:22
What Lies Above Pascal's Triangle?
9:10
Quadratic formula for non-constant coefficients
17:22
A Proof That The Square Root of Two Is Irrational
14:15
Functional Equation
12:42
A Fibonacci Series Problem
8:50
You wouldn’t expect this "quadratic" equation to have 6 solutions!
28:12