X^3/2 - 2x^-1/2 + x^1/2 Help Factoring

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Homework Help Overview

The discussion revolves around the factoring of the expression X^3/2 - 2x^-1/2 + x^1/2. Participants are attempting to understand how to arrive at the textbook solution of 1 - x^4/3, while expressing confusion over their own results and the factoring process.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss various methods for factoring, including the suggestion of substitution with u = x^{1/2}. There is also a focus on maintaining balance in the equation while factoring out terms like x^-3/2.

Discussion Status

Some participants have expressed uncertainty about their results and the correctness of the textbook answer. There is an ongoing exploration of different approaches to the problem, with no clear consensus reached yet.

Contextual Notes

One participant noted a potential misunderstanding regarding the purpose of factoring and the relevance of the solution sought. Additionally, there was a mention of posting in the wrong section, indicating possible confusion about the forum's structure.

Hierophant
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I'm looking to factor this...


X^3/2 - 2x^-1/2 + x^1/2

The textbook offers the solution 1-x ^4/3

No idea how to get this result. I got X ^-3/2 (x-1)^2
I would like it if someone could shed light on how to factor x^-3/2 from things like 2x ^1/2
I assume you just keep the equation balance, so if you re-distribute everything, it reverts to the original.

I would like to know how you get the answer too.

Thanks so much!
 
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Maybe you can do substitution, say ##u = x^{1/2}##?
 
Hierophant said:
I'm looking to factor this... X^3/2 - 2x^-1/2 + x^1/2

The textbook offers the solution 1-x ^4/3

No idea how to get this result. I got X ^-3/2 (x-1)^2

Both look wrong
Mod note: Removed complete answers.
 
Last edited by a moderator:
Hierophant said:
I'm looking to factor this...

X^3/2 - 2x^-1/2 + x^1/2

The textbook offers the solution 1-x ^4/3

No idea how to get this result. I got X ^-3/2 (x-1)^2
I would like it if someone could shed light on how to factor x^-3/2 from things like 2x ^1/2
I assume you just keep the equation balance, so if you re-distribute everything, it reverts to the original.

I would like to know how you get the answer too.

Thanks so much!

So why are you looking to factor this, what exactly are you trying to obtain?

Also this should go in homework help, fyi.

edit:
Pwan just gave your answer, but is this what you're even looking for?
 
Last edited:
To my delight and perhaps also not to my delight, I got the correct answer, but used the wrong answer key. Sorry guys, won`t happen again.

Also sorry for posting in the wrong section, I was rather fatigued at the moment of posting.

I`m just going to go sit in the corner now.
 
To my delight and perhaps also not to my delight, I got the correct answer, but used the wrong answer key. Sorry guys, won`t happen again.

Also sorry for posting in the wrong section, I was rather fatigued at the moment of posting.

I`m just going to go sit in the corner now.
 

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