Answer: The standard form of the quadratic equation in root form is:
[tex]Ax^2+Bx+C=0\Rightarrow(1)[/tex]
By comparing the provided equation with the standard form or equation (1) we get the following answer:
[tex]\begin{gathered} \begin{equation*} Ax^2+Bx+C=0 \end{equation*} \\ \\ -x^2+4x-7=0 \\ \\ \\ A=-1 \\ \\ B=4 \\ \\ C=-7 \end{gathered}[/tex]
Therefore the answer is:
[tex]C=-7[/tex]
