You probably haven't solved a square root equation like this before
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Is x^x=0 solvable?
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Oxford MAT asks: sin(72 degrees)
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Believe in geometry, not squaring both sides!
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How To Calculate Any Square Root
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You probably haven't solved a quartic equation like this before!
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Raiz quadrada de um número imaginário
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My first calculus 3 limit on YouTube
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