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Let x be a positive number such that 2x^2=4x+9. If x can be written in simplified form as \(\dfrac{a + \sqrt{b}}{c}\) such that a, b, and c are positive integers, what is a+b+c?

 Aug 9, 2021
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2x^2-4x-9 = 0

Quadratic formula show one value of  x =   [2 + sqrt (22) ] / 2           FInish from here

 Aug 9, 2021

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