Maths year 11

Announcements Posted on
Four things that unis think matter more than league tables 08-12-2016
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    Good.
    Now I added the like terms



    Posted from TSR Mobile
    Attached Images
     
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    Now I added the like terms



    Posted from TSR Mobile
    Yep
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    Yep
    I got this


    Posted from TSR Mobile
    Attached Images
     
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    I got this


    Posted from TSR Mobile
    Yeah you can go further than that.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    Yeah you can go further than that.
    Can I do -6 root 4?

    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    Can I do -6 root 4?

    Posted from TSR Mobile
    No, why are you multiplying them...?
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    No, why are you multiplying them...?
    Do I just leave them as they are?

    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    No, why are you multiplying them...?


    Posted from TSR Mobile
    Attached Images
     
    Offline

    3
    ReputationRep:
    heyyyy you got there
    Offline

    3
    ReputationRep:
    wouldn't it be 1root2 - 2 + 6 = 1root2 + 4
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    heyyyy you got there
    Yaaaaay

    Thank you

    I just thought hard and got it

    Do you mind giving me 3 examples of similar surd questions including simplifying and expanding and any haha x

    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by 4nonymous)
    wouldn't it be 1root2 - 2 + 6 = 1root2 + 4
    (Original post by z_o_e)
    Yaaaaay

    Thank you

    I just thought hard and got it

    Do you mind giving me 3 examples of similar surd questions including simplifying and expanding and any haha x

    Posted from TSR Mobile
    Yep it should be. After spending a while on hoping you would realise that root 4 is 2 I completely disregarded the sign lol.
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    Yaaaaay

    Thank you

    I just thought hard and got it

    Do you mind giving me 3 examples of similar surd questions including simplifying and expanding and any haha x

    Posted from TSR Mobile
    (1+3\sqrt7)^2

    (2+\sqrt2)(3+\sqrt3)

    \frac{8}{2+6\sqrt10}
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    (1+3\sqrt7)^2

    (2+\sqrt2)(3+\sqrt3)

    \frac{8}{2+6\sqrt10}

    How do I multiply 3 root 7 by 3 root 3?

    I think I need to work on adding and subtracting surds tomorrow and division..etc
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    How do I multiply 3 root 7 by 3 root 3?

    I think I need to work on adding and subtracting surds tomorrow and division..etc
    Why would you multiply 3 root 7 by 3 root 3? Where are you getting this from?
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    Why would you multiply 3 root 7 by 3 root 3? Where are you getting this from?
    Sorry did it again...

    How do I solve the second bracket



    Posted from TSR Mobile
    Attached Images
     
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    Sorry did it again...

    How do I solve the second bracket



    Posted from TSR Mobile
    Well you have 3 x 3 x root7 x root7 so do whatever you think is right here.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    Well you have 3 x 3 x root7 x root7 so do whatever you think is right here.
    I'm not sure. I think root 7 stays and I multiply 3*3

    so 9 root 7
    • Thread Starter
    Offline

    2
    ReputationRep:
    I get stuck on these steps


    Posted from TSR Mobile
    Attached Images
     
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    I'm not sure. I think root 7 stays and I multiply 3*3

    so 9 root 7
    3*3*root7*root7

    3-3=9
    root7*root7=7
    (remember when you multiply roots you just multiply the numbers on the inside so here you get root 49 = 7 although its easier to just know that the same roots multiplied you just get rid of the root)

    so its 9*7=63
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: December 10, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Poll
Do you think you'll achieve your predicted A Level grades?
Study resources

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

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