1.vertex form is
to get into vertex form, complete the square
step 1: group x terms
step 2: factor coefient in front of x^2 term
prep for next step: take 1/2 of linear (1st dgree term) and square it
,
step 3: add positive and negative of that previous number inside the parenthasees
factor perfect squaer trionmial
take out that -36 by expansion
2. factor out the 2
what 2 numbers multiply to get 12 and add to get 8?
2 and 6
3.
for
in our case
a=1, b=-7, c=-6
so and
4. remember that so
treat as a variable
[tex}16[/tex]