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]
Answer:
B
Step-by-step explanation:
given
A =
(
+
)h
multiply both sides by 2 to eliminate the fraction
2A = (
+
)h
divide both sides by the multiplier h
=
+ 
Subtract
from both sides
-
=
, that is
=
- 
Answer:irst, write the scale factor. Next, write ratios to represent the unknown actual length and width of the display to the scale length and width of the display. Then, write two proportions by setting the two length ratios equal to one another and the two width ratios equal to one another. The given unit is feet
Step-by-step explanation: