Adding algebraic expressions problem :( Please help. (1 Viewer)

[Deer]

Ergh this is making me so frustrated

If someone could help that would be greatly appreciated.

2x+y/x-3 + x-y/x+3 - 3x+2y/x^2+x-6

It should be easy but it isn't happening for me.

 

[hermand]

sure, but WHERE IS THE EQUATION EDITOR?!

aight, i'll try this the hard way.

wait, are you sure the first term isn't supposed to be 2x+y/x-2?

 

[dirtybird]

Not that I am an expert, but I'm pretty certain that one of the bottom expressions does need to be an (x-2) and not (x-3)

Other than that, I'm stuck.

Sorry I couldnt be of more help.

 

[studentcheese]

Yah, I'm stuck too. The answer is extremely long, which it shouldn't be. The question is supposed to be simplified. Check to see if the question is copied correctly.

 

[lolokay]

i thinks the denominator should be x-2 not x-3

 

[Deer]

Its definately copied correctly, I just double checked.

Im so upset, I want to drop maths ;__;

 

[Deer]

Well unless the actual question sheet has a mistake... ?
;_;
But someone in my class said they got it, so it couldnt be... Unless they are wrong?

 

[aimhigh10]

is the final answer:
(x-1)(3x^2-3x)+4y
(x-3)(x+3)(x-2)

by any chance?

 

[Deer]

is the final answer:
(x-1)(3x^2-3x)+4y
(x-3)(x+3)(x-2)

by any chance?

I dont think so, I plugged in some imaginary numbers and it didnt work out the same... But maybe.. Working?

 

[iSplicer]

I dont think so, I plugged in some imaginary numbers and it didnt work out the same... But maybe.. Working?

be careful with the way you use the term 'imaginary numbers'

=)

 

[aimhigh10]

I dont think so, I plugged in some imaginary numbers and it didnt work out the same... But maybe.. Working?

its soooooooooo long, took me a whole a4 page
give it a few minutes..

edit: i put in some numbers as well, and it didnt work.. so i guess it doesnt

 

[Deer]

its soooooooooo long, took me a whole a4 page
give it a few minutes..

edit: i put in some numbers as well, and it didnt work.. so i guess it doesnt

It's taken me several a4 pages and a lot of angst and istill dont get it..
Ohhh well.
Its a maths assignment due tomorrow, I suppose I'll just have to lose a few marks. Teach me for leaving it till the last minute, we just havent done such complicated examples in class. *sigh*
Thanks for trying to help guys

 

[hermand]

be careful with the way you use the term 'imaginary numbers'

=)

haha, yeah, i was like WTF when did imaginary numbers come into the two unit prelim course?! haha.

 

[Drongoski]

Its definately copied correctly, I just double checked.

Im so upset, I want to drop maths ;__;

Dear Deer - don't give up. You are not likely to get a problem of this complexity in 2U Maths HSC Exam. One of my concerns is whether or not you have transcribed the expression correctly?

Is the expression supposed to be:

(2x + y)/(x - 3) + (x - y)/(x + 3) + (3x +2y)/(x^2 + x - 6) ???

The way you have quoted the expression does not look right.

 

[TBK11]

Ergh this is making me so frustrated

If someone could help that would be greatly appreciated.

2x+y/x-3 + x-y/x+3 - 3x+2y/x^2+x-6

It should be easy but it isn't happening for me.

the answer is

x^3+2y-6x^2
------------------
x^2

[= dont give up

 

[tommykins]

 

[Lukybear]

Yea tommy's answer is right. I got exactly same thing twice.

 

[suzlee]

I got what the above got as well..

the answer is

x^3+2y-6x^2
------------------
x^2

[= dont give up

Do you mind posting your full solution? This question is killing me.

 

[TBK11]

I got what the above got as well..


Do you mind posting your full solution? This question is killing me.

i think i might have done it wrong :s but

2x+y/x-3 + x-y/x+3 - 3x+2y/x^2+x-6

2x+x-3x+x+y/x-y/x+2y/x^2-3+3-6

x+y/x-y/x+2y/x^2-6

(x^2)x+xy+x(-y)+1(2y)-(x^2)6

x^2+xy-xy+(2y)-x^2 times 6
-------------------------------------
x^2

x^2+1 xy-xy+2y-6x^2
------------------------------
x^2

x^3 +xy-xy+2y-6x^2
----------------------------
x^2



x^3+2y-6x^2
-----------------
x^2

 

[Timothy.Siu]

i think i might have done it wrong :s but

2x+y/x-3 + x-y/x+3 - 3x+2y/x^2+x-6

2x+x-3x+x+y/x-y/x+2y/x^2-3+3-6

x+y/x-y/x+2y/x^2-6

(x^2)x+xy+x(-y)+1(2y)-(x^2)6

x^2+xy-xy+(2y)-x^2 times 6
-------------------------------------
x^2

x^2+1 xy-xy+2y-6x^2
------------------------------
x^2

x^3 +xy-xy+2y-6x^2
----------------------------
x^2



x^3+2y-6x^2
-----------------
x^2

lol u took a+b/c to be a+b/c and not (a+b)/c
hmm.