I need help from you smart people

G

Guest

Guest
HI again......

I got this one almost to the end, but I am stuck!!!!!!! HELP! :roll:

1 2 x
___ + _________ + _______
x+4 x^2 +2x-8 x-2

1 2 x
___+___________ + ______
x+4 (x-2)(x+4) x-2

1(x-2) 2(x+4) x
________ + __________ +________
x+4(x-2) (x-2)(x+4) (x-2)(x+4)

1(x-2) +2(x+4)+x
_______________
(x-2) (x+4)

Where do I go from here.....my book says the answer is
x(x+5)
______
(x-2)(x+4)

Thanks bunches.
 

tkhunny

Moderator
Staff member
Joined
Apr 12, 2005
Messages
9,790
Why did you alter the middle one with (x+4)/(x+4)? Try it with the third term, instead.
 

soroban

Elite Member
Joined
Jan 28, 2005
Messages
5,588
Hello, afreemanny!

I thought you'd figure it out by now.
The system doesn't retain extra spaces.
You can try to type "AB . . CD", but it won't work.
You can try "code" if you dare . . . it still takes a lot of work.

Code:
               1             2           x
             -----  +  ------------  + -----
             x + 4     x^2 + 2x - 8    x - 2


               1             2             x
             -----  +  --------------  + -----
             x + 4     (x - 2)(x + 4)    x - 2


       1(x - 2)              2              x(x + 4)
   --------------  +  --------------  +  --------------
   (x + 4)(x - 2)     (x - 2)(x + 4)     (x - 2)(x + 4)


                  1(x - 2) + 2 + x(x + 4)
                  -----------------------
                      (x - 2) (x + 4)


                    x - 2 + 2 + x^2 + 4x
                    ---------------------
                       (x - 2)(x + 4)


                         x^2 + 5x
                      --------------
                      (x - 2)(x + 4)


                          x(x + 5)
                       --------------
                       (x - 2)(x + 4)
 
G

Guest

Guest
I will try it.

I'll be sure to try the "code" button next time. I am so awful at math and stuff. Give me English and I can go rounds with ya, but not math..... :cry:
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,470
Re: I will try it.

afreemanny said:
I'll be sure to try the "code" button next time. I am so awful at math and stuff. Give me English and I can go rounds with ya, but not math..... :cry:
Gee Haw Ma, not awful: just out of practice.

OK: what's the longest English word?
 
G

Guest

Guest
?????

So why aren't you a "figment of our imaginations?" :D

Lets see....the longest English word????

To the last of my knowledge:
Pneumonoultramicroscopicsilicovolcanoconiosis:
This is a lung disease.

What do you think???????? :?:
 

tkhunny

Moderator
Staff member
Joined
Apr 12, 2005
Messages
9,790
That's a good try, but there are WAY longer. Don't even try to find them. It will take up far too much space in the math forum.
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,470
GOTCHA both!
Longest word is sMILEs ; get it?
 
G

Guest

Guest
Great job!

I really needed that SMILE! Thanks a bunch!
I am sure there are lots of different answers! :D
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,470
sMILEs : there's a mile between the 1st and last letter;
that's why it's longest word!
 

tkhunny

Moderator
Staff member
Joined
Apr 12, 2005
Messages
9,790
skilometers

Hmpf. Doesn't work in metric.
 
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