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# helppppp

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Let x be the positive number such that 2x2=4x+9

If  x can be written in simplified form as  (a+(sqrt b))/c such that a, b  and c are positive integers, what is a+b+c?

Jan 26, 2022

By the quadratic formula, $$x = \frac{2 + \sqrt{13}}{4}$$, so a + b + c = 2 + 13 + 4 = 19.