Based on Fibonacci's sequence, prove that the equation x^3 + 2x^2 + 10x = 20 can...

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Based on Fibonacci's sequence, prove that the equationx^3 + 2x^2 + 10x = 20 can have nosolution in the form a + rad(b), wherea and b arepositive rationals.

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Fibonacci was his solution of the cubic equation x3 2x2 10x 20 which was reportedly given to him as a challengeThe accuracy of the result it is worth noting how despite his writings on the Hindu Arabic numeration system he and others including Arabic mathematicians still wrote fractional values in the Babylonian sexagesimal notation In his analysis of this    See Answer
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