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Pythagorean Theorem
Pythagorean Theorem a^2+b^2=c^2 -
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Irrational Numbers
5th Century BC Pythagoras founded irrational numbers -
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Eric Teaches Quadratic
x=-b+-sqrt(b^2-4ac)/(2a) -
17th century Calculus founded by Isaac Newton and Gottfried Leibniz
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18th century Leonard Euler named i [sqrt(-1)] and pi [3.14159...]