Turn on thread page Beta
    • Thread Starter
    Offline

    15
    ReputationRep:
    Simplify ((2+√2)(3+√5)(√5−2))/((√5−1)(1+√2))

    Sorry I tried to type this as an actual fraction on OneNote and copy and paste and didn't seem to work..

    Answer is supposed to be root 2, no idea how to get there
    • Community Assistant
    Offline

    20
    ReputationRep:
    Community Assistant
    (Original post by G.Y)
    Simplify ((2+√2)(3+√5)(√5−2))/((√5−1)(1+√2))

    Sorry I tried to type this as an actual fraction on OneNote and copy and paste and didn't seem to work..

    Answer is supposed to be root 2, no idea how to get there
    Might be simpler to deal with the roots of 5 and 2 being separated, ie \dfrac{2+\sqrt{2}}{1+\sqrt{2}} \cdot \dfrac{(3+\sqrt{5})(\sqrt{5}-2)}{\sqrt{5}-1} then deal with each fraction separately by rationalising the denominator and obtaining the usual form. Then multiply the two.
    Offline

    21
    ReputationRep:
    (Original post by G.Y)
    Simplify ((2+√2)(3+√5)(√5−2))/((√5−1)(1+√2))

    Sorry I tried to type this as an actual fraction on OneNote and copy and paste and didn't seem to work..

    Answer is supposed to be root 2, no idea how to get there
    Unparseable or potentially dangerous latex formula. Error 4: no dvi output from LaTeX. It is likely that your formula contains syntax errors or worse.
    \frac{(2+\sqrt 2) (3+\sqrt 5) (\sqrt 5-2)}{(\sqrt 5-1) (1+\sqrt 2)


    EDIT: Ooops
 
 
 
Poll
Should predicted grades be removed from the uni application process
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.