Question

Write the quadratic function in vertex form. y = x2 + 18x + 71

Answer 1

X=67
___
20
??? Is that what you needed idk lol

Answer 2

It is going to look like y=(x+9)2+k for some kto find k replace x by −9 in the original expression and see what you get because y=(−9+9)2+k=0+k=k