Verified Answer :

chowchow4now

I am going to go with the assumption that your equation is \(x^2+mx+n=0\). If there is only one solution, then the equation must be a perfect square. So square \((x+3)\) to solve for the equation in the similar form that is given. \((x+3)^2=x^2+6x+9=0\). So the variables match up perfectly in the equation, meaning that the value of m is 6, letter choice C.

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