Question

which of the following equations,written as the quadratic formula,is equivalent to the given equation?

Answer 1

`\begin{gathered} (x+4)^2=7 \\ x^2+8x+16=7 \\ x^2+8x+16-7=0 \\ x^2+8x+9=0 \\ \\ \text{ the solution is } \\ \\ x=\frac{-8\pm\sqrt[]{8^2-4\cdot9\cdot1}}{2\cdot1} \\ \\ \text{ thus the answer is the last } \end{gathered}`