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Integrate 1(1+x^4) by factoring
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integral of sqrt of tanx
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n^4 + 3n^2 + 2 is never a perfect square
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Integral of 1/(1+x^4) by Brute-force Partial Fraction!
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Japanese | A Nice Algebra Problem
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x^y = y^(x-y)
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integrate sqrt(x+1) over sqrt(x+2)
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