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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

krassi_holmz
2006-01-08 04:41:20

Yes, but the "a" cannot be removed.

mathsyperson
2006-01-08 03:56:01

I'm a bit late here, but I agree with everyone else.

I'd just scale up the left fraction by x to get a common denominator of x³, and then they can easily be added together.

RickyOswaldIOW
2006-01-08 03:31:12

No offence intended.  I play online FPS games and my language in that would get me banned in a flash here. You **...

krassi_holmz
2006-01-07 21:35:27

Yes, wildrocky, yes.

ganesh
2006-01-07 15:39:50

Very funny. First krassi_holmz becomes crazy holmes, finally, grassy homes. I really hope krassi_holmz doesn't take offence at that. Maybe, rickyoswaldiow is just being funny. But a word of caution to rickyoswaldiow. People don't like their names (or usernames) spelt or pronouned wrongly. smile

RickyOswaldIOW
2006-01-07 10:19:11

appologise, grassy homes.

krassi_holmz
2006-01-07 10:01:22

Actually it was BAD, but I'll forgive you if you promise that you will
NEVER
NEVER
NEVER
do this again
much wink smile

krassi_holmz
2006-01-07 09:58:36

I've just read this "crazy holmes" thing.

Ha, ha, ha, that was VERY VERY... VERY
###     ###    ###   ###
#          #    #  #    #  #    #
#   ##  #     # #     #  #    #
#    #   #     # #     #  #    #
###     ###    ###   ###

Rose-Red
2006-01-07 09:54:31

yeah, maybe you're right. sad

krassi_holmz
2006-01-07 09:53:31

I think the book's answer isn't correct. We can't eliminate a.
I got the same as you.

RickyOswaldIOW
2006-01-07 09:41:02

Sounds like a job for Crazy Holmes wink

Rose-Red
2006-01-07 09:23:02

well the answer is http://img336.imageshack.us/img336/3897/boo8rp.jpg
I also tried to do that but in quite different way. Still I couldnt get the right answer. That's what I got
http://img336.imageshack.us/img336/3223/too3rf.jpg

RickyOswaldIOW
2006-01-07 09:06:12

I'd start with x/x^2, firstly I'd "reciprocal" which basically means you take the value with the power (x^2) and move it to the top, when you do this you MUST change the sign of the power:

x / x^2  = x * x^-2

I'd then do the same with the next part of the sum, giving you b - ax * x^-3.  Now all that is left is

(x * x^-2) + (b - ax * x^-3), since none of the values share similar powers, I think this is as far as you can go.  (Don't take my word for it, I'm new to this too).

Rose-Red
2006-01-07 08:59:01

Maybe someone could simplify this?

http://img447.imageshack.us/img447/4207/grint1km.jpg
again, I need the whole solution, because the answer is at the end of the book wink

RickyOswaldIOW
2006-01-07 08:36:37

Thankyou, I was drunk sad
Won't happen again.

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