Question

Completing square form, with steps:

-0.014x^2+ 0.56x+14.4

Answer 1

i hate decimals

Answer 2

make it fraction

Answer 3

Tofu, 9 more !

Answer 4

divide each term by -0.014 first

Answer 5

tofu, i love it really

Answer 6

XD

Answer 7

LOL, Tofu, Saifi sounds way~ BETTER :P

Answer 8

lol @ #s

No mini it dosnt.

Answer 9

Saifoo sucks

I mean...

Saifoo, this problem sucks

Answer 10

Ofc it does, you don't deserve to be called a delicious food :P

Answer 11

\[-.014(x^2-40x)+14.4\] is step one

Answer 12

yea it really does suck doesn't it!

Answer 13

thenn....??? @sat

Answer 14

i still like the name seafood better

Answer 15

\[-.014(x-20)^2+14.4-.014\times 400\]

Answer 16

i don't think that is right

Answer 17

really? i may have made a mistake but i get
\[-.014(x-20)^2+8.8\]

Answer 18

let me try

Answer 19

it's not 8.8

Answer 20

oh cramp i subtracted when i should have added sorry

Answer 21

\[-.014(x-20)^2+14.4+.014\times 400\]
\[-.014(x-20)^2+20\]

Answer 22

from where you get:
14.4+.014×400

Answer 23

i forget that the first term was negative. so you were actually subtracting
\[-.014\times 400\] so you have to add it back. my mistake

Answer 24

oh when you "complete the square" i changed
\[x^2-40\] into
\[(x-20)^2=x^2-40+400\] i actually added 400

Answer 25

but i didn't really add 400 because it was all multiplied by -.014

Answer 26

\[-0.014x^2+0.56x+14.4\]
\[=-0.014(x^2+\frac{0.56}{-0.014}x)+14.4\]
\[=-0.014(x^2+\frac{0.56}{-0.014}x+(\frac{0.56}{2 \cdot (-0.014)})^2)+0.014 \cdot (\frac{0.56}{2 \cdot (-0.014)})^2\]
\[=-0.014(x+\frac{0.56}{2 \cdot (-0.014)})^2+0.014 \cdot (\frac{0.56}{2 \cdot (-0.014)})^2\]
=-0.014(x-20)^2+5.6
is that right?

Answer 27

no i am right sorry

Answer 28

What arrogance

Answer 29

thank you!

Answer 30

oops i forgot about the 14.4

Answer 31

It's like saying "no, sorry, I'm God"

Answer 32

because myinninay know i am not really sorry, i am just gloating

Answer 33

satellite is a math god

Answer 34

lol

Answer 35

stupid decimals
too much decimals

Answer 36

No, it doesn't work that way. Either you're God, or you're not.

Answer 37

Either we're all God, or nobody is

Answer 38

satellite is a math god

Answer 39

why it repeat what i said that was weird

Answer 40

satellite is a math god

Answer 41

it did it again :(

Answer 42

@saifoo the 14.4 was in the problem, and the rest was reconciling from completing the square. that is why the last term was
\[14.4+0.14\times 400\]

Answer 43

satellite using his divine power

Answer 44

Myininaya, don't do that again else God will spank you

Answer 45

its putting that with every reply i'm not doing it

Answer 46

It didn't put it this time. This shows that you truly fear God

Answer 47

ok it looks like it is over
satellite and i have been competing and it looks like satellite>myininaya

Answer 48

i still didn't figure out that one with the inflection tangent

Answer 49

I didn't think it was worth competing over. I mean, you have to consider who posted the problem. You have to ask yourself, "Is Saifoo worth competing over?".

Answer 50

no we aren't competing over saifoo

Answer 51

So you're not competing over Saifoo, but over his problems instead.