Given that a and b are integers and that \(5x+2\sqrt{7}

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Given that a and b are integers and that \(5x+2\sqrt{7}\) is a root of the polynomial \(x^2 - ax + b + 2\sqrt{7}\) in xx, what is the value of b?

[MBA XAT 2019]

A 5

B 2

C 9

D 7

E 14