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# Help with a math problem

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posted on Aug, 24 2004 @ 11:33 PM
I was wondering if some one could help me with this problem

2(1/2Y)squared+5(1/2Y)-3

I have to use variable substitution to factor.

The first part: 2(1/2Y) is squared.

[Edited on 8/24/04 by jetsetter]

posted on Aug, 25 2004 @ 12:22 AM
Ohh NO! I forgot all my math! Put 3y, that's what I used to do for every problem.

posted on Aug, 25 2004 @ 12:24 AM
Notation:

or "one over 2Y" ?

posted on Aug, 25 2004 @ 07:38 AM
Well, it seems to read 1 over 2Y. Man, I really hate this problem.

posted on Aug, 25 2004 @ 08:29 AM
u might get help from www.scienceforums.net... in "Math Problems" section........I'm sure you'll get there help quickly

[Edited on 25-8-2004 by phyto]

posted on Aug, 25 2004 @ 01:04 PM

posted on Aug, 25 2004 @ 02:53 PM
Damn...lol...it's been a while for me - If my friend hadn't lost my TI-83 I could tell you for sure...

Here's what I got - y=1 - here's how I got it....might want to have someone check my work here....I could be way off

2(1/2y)squared +5(1/2y) - 3
2(1/4y) + 5 (1/2y) - 3
1/2y + 2.5y - 3
3y - 3 (Something tells me you could leave it at this, but you can also set it equal to zero here too I think)
3y - 3 = 0
3y = 3
y = 1

[Edited on 8/25/2004 by EnronOutrunHomerun]

posted on Aug, 25 2004 @ 03:12 PM

Originally posted by jetsetter
I was wondering if some one could help me with this problem

2(1/2Y)squared+5(1/2Y)-3

I have to use variable substitution to factor.

The first part: 2(1/2Y) is squared.

[Edited on 8/24/04 by jetsetter]

Let 1/2Y = X.. Then you get 2x^2 + 5x - 3. The rest should be self-explanatory.

Originally posted by EnronOutrunHomerun
Damn...lol...it's been a while for me - If my friend hadn't lost my TI-83 I could tell you for sure...

Here's what I got - y=1 - here's how I got it....might want to have someone check my work here....I could be way off

2(1/2y)squared +5(1/2y) - 3
2(1/4y) + 5 (1/2y) - 3

You screwed up there squaring 1/2y = 1/(4y^2) NOT 1/4y. Nice Try though.

[Edited on 25-8-2004 by websurfer]

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