The Quadratic Formula No One Taught You
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Beyond ½ a b sin(C)
14:15
Functional Equation
25:22
What Lies Above Pascal's Triangle?
17:22
A Proof That The Square Root of Two Is Irrational
9:50
Why do we "complete the square"?
28:12
A Very Nice Math Olympiad Problem | Solve for x | Algebra
8:50
You wouldn’t expect this "quadratic" equation to have 6 solutions!
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