What is the sum of all possible solutions to the equationfff\(\sqrt{2x^{2}-x-9}=...【小站备考】

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Question 15 Selected one answer choice

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What is the sum of all possible solutions to the equation

$\sqrt{2x^{2}-x-9}=x+1$

A.-2

B.2

C.3

D.5

E.6

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