Question

Given y=x^(2)-8x+9, Complete the square and convert the equation to y=a(x-h)^(2)+k

Answer 1

you know this
\[ \large (a+b)^2=a^2+2ab+b^2 \]

Answer 2

know try finding similarities with what you have
a^2 corresponds with x^2
right?

Answer 3

yea.

Answer 4

now look at the middle term.
a corresponds to x
then 2b=-8
agree?

Answer 5

yes.

Answer 6

what is the value of b?

Answer 7

-4?

Answer 8

yes
then b^2=

Answer 9

16

Answer 10

great
do you have 16?

Answer 11

are you there?

Answer 12

as one of the answers. no. The answers are
A. y=(x-4)^2+7
B.y=(x-4)^2-7
C.y=(x-8)^2+9
D.y=(x-4)^2+9
E.None of the above

Answer 13

wait now you have
\[ \large y=x^2-8x+9 \]
you add and substract what you found b=16
\[ \large y=x^2-8x+16+9-16 \]
\[ \large y=(x-4)^2+ \]

Answer 14

you tell me which one is the correct

Answer 15

9

Answer 16

9-16=

Answer 17

-7 so the answer is B?

Answer 18

yes!
great work
did u understand?

Answer 19

yes i did. thank you so much.!

Answer 20

u r welcome