Question

Complete the square to rewrite y = x2 + 8x + 7 in vertex form, and then identifythe minimum yvalue of the function.A. The minimum value is -2.B. The minimum value is -9.C. The minimum value is -23.D. The minimum value is -4.

Answer 1

Given

`y=x^2+8x+7`

Now,

`\begin{gathered} x^2+8x+7=x^2+8x+16-9 \\ =(x+4)^2-9 \end{gathered}`