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Simplifying (x^5+x+1)/(x^2+x+1) in Three Ways
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Evaluating f(x+1/x)=x^65+1/x^65
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A nice functional equation from Romania
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MY CHESS TOURNAMENT GAME 1!!!!!!!
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Solving f(x^3+3x^2+3x)=x in Two Ways
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A Nice Differential Equation #calculus
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solving a quadratic exponential equation with different bases
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