Question

What number must you add to complete the square?

x2 + 12x = 33 helP!

Answer 1

added by (1/2 * 12)^2 = 6^2 = 36

Answer 2

http://openstudy.com/study#/updates/51a6698be4b0ffa8e49a2edf

just in case ....

Answer 3

omg can i get answer plz

Answer 4

no

Answer 5

idk man i forgot 9th grade stuff

Answer 6

I've never learn this before

Answer 7

me too, had to relearn it all in my 40s

Answer 8

the setup follows the rundown in the link ...

we are essentially try to find a value of n^2, such that 2n = 12 in this case

Answer 9

2, times what, equals 12?

Answer 10

4

Answer 11

almost, 2*4 = 8 ... lets assume 2*6 = 12

Answer 12

since n=6, and we want n^2; what is the value of 6^2 ?

Answer 13

i do not have any calculator on me

Answer 14

u divide or something

Answer 15

you might need to go back and brush up on your basic times tables then ... or you have forgotten what ^2 means.

Answer 16

n^2 is notation for n times n

6^2 is notation for 6 times 6

Answer 17

36

Answer 18

correct :)

so, in order to "complete the square" we need to add 36 to both sides of your setup

Answer 19

so 36 is the complete square

Answer 20

no, the value "36" completes the square for us

x2 + 12x = 33

x2 + 12x +36 = 33 +36

(x-6)^2 = 69

Answer 21

?

Answer 22

oh k

Answer 23

69

Answer 24

man thats a lot of work

Answer 25

it is, which is why computers are sooo great these days :)

Answer 26

you eventually just get into the habit of squaring half of the coefficient of x

Answer 27

What number must you add to complete the square?

x2 + 12x = 33
^^^
12/2 = 6

6^2 = 36

Answer 28

so thats the answer 36

Answer 29

i hope so .... unless weve been working on a different problem :/

Answer 30

anyway thanks man i just took a quiz on this and i failed it

Answer 31

it takes a bit of practice to get down pat, and you really have no reason to come across it when working out there in the real world.

Answer 32

i hate doing this