Polynomials help - urgent (1 Viewer)

[HeroicPandas]

http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2001exams/pdf_doc/mathemat_ext2_01.pdf

Q7 part b)

Can someone please do it in full detail

Thanks

 

[bobmcbob365]

Okay, so I don't know how to use LaTeX, so I wrote this in Microsoft Word. I just finished my Economics Exam, so I have a lot of time on my hands. It's kind of late, so some steps may have been skipped or my explanations may not make full sense. So bear with me lol.

 

[HeroicPandas]

Okay, so I don't know how to use LaTeX, so I wrote this in Microsoft Word. I just finished my Economics Exam, so I have a lot of time on my hands. It's kind of late, so some steps may have been skipped or my explanations may not make full sense. So bear with me lol.
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Man bob, thanks so much

 

[HeroicPandas]

Okay, so I don't know how to use LaTeX, so I wrote this in Microsoft Word. I just finished my Economics Exam, so I have a lot of time on my hands. It's kind of late, so some steps may have been skipped or my explanations may not make full sense. So bear with me lol.
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I did the first 1, but the 2nd part idk how to reason it, but still thanks i 100% get it nwo

 

[bobmcbob365]

part b is basically proof by contradiction. It proves that any root of the polynomial, if it is in the form r+s root(d) cannot have r, s or d being all rational. i.e. r, s and/or d must be irrational.

 

[bobmcbob365]

lol no problem.