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|dw:1359940501331:dw|

Answer
|dw:1359940559335:dw|

can someone just check if that is the right answer

im still kind of confused about it

i think you've made a mistake somewhere,

ok i did it wrong apparently but i dont know how to do it still :( ?

ok i will type it out for you

so first what i did was split the denominator to x(x^2-4)
then split that to (x+2)(x-2)

then set the 2x^2 -12x+4=A/x+B/(x+2)+C/(x-2)

here....
x^3-4x^2 = x^2 (x-4)
and not x (x^2-4)

wow i cant believe i missed that

since you know partial fractions , i think you'll get it in your next try..

sorry guys my intentet is acting weird

yea ill try the steps again and after im done pm you the steps

to see if i did it right thanks

ok, sure.
or you can post it here..
welcome ^_^

so would the partial thing be Ax+ B /x^2 +C/(x-4)

yes.

A/x+ B /x^2 +C/(x-4)

wait isnt when the denominator is x^2 the top part is (Ax + B )/(x^2)

its the same thing!
(Ax+B)/x^2 = A/x + B/x^2

yep really had a long day today -.- after the superbowl drink and math dont go together

lol.

ok after im done ill post the answer ty

so 2x^2-12x+4 = A/x + B/x^2 +c/(x-4)

and i solved for c which got me -3/16

|dw:1359956605483:dw|

and i plugged in as x = 4;

to find c, put x=4
to find b, put x=0
to find a, put x=any other value, say x=1

what part of partial fractions, do you not get ?

if you put x = 0 you will get all 3 = 0

u sure ?

|dw:1359957041709:dw| so you cant put 0

yea i got the c one though with is at x = 4

......+B (x-4)+.....

A x (x-4) +B (x-4) +C (x^2)

|dw:1359957163440:dw|

so can you tell me how you cancelled out the x in the B and the x in the A

|dw:1359957466093:dw|

|dw:1359957564998:dw|

shouldnt A/x be multiplied by |dw:1359957703525:dw|

then denominator of A will become x^3 (x-4)
which we don't want and is not common

hold on what i meant was isnt the format |dw:1359957835056:dw|

so, that i have SAME denominator for all the 3.

do you have to do this when the denominator has a square on the x? or is it dependent on the problem

|dw:1359958265843:dw|its as simple as this...

do what ?

oh i see i guess you could multiply what i did but it would cancel

i think i finally get it now

now if i had payed attention in my algebra classes this would be so much easier -.-

no problem! because its easier for you now! right ?