The Better Quadratic Formula You Won't Be Taught
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Can You Solve This "Impossible" Puzzle?
14:47
An Exact Formula for the Primes: Willans' Formula
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A Forbidden Jutsu for Quadratic Equations
17:22
A Proof That The Square Root of Two Is Irrational
11:31
Solving a 'Harvard' University entrance exam
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The Quadratic Formula No One Taught You
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This is why you're learning differential equations
40:05