Join TSR now and get all your revision questions answeredSign up now

AS Maths Help please.

    • Thread Starter
    Offline

    2
    ReputationRep:
    Can you please answer these questions and explain how you did it. Thank you x

    1) (root32+root18)/3+root2

    2) A rectangle has an area of 4root5-4 and al ength of one side is 1+root5. Find the length of the other side in the form a+bRoot5

    3) Write (2rootX+3)/x in the form 2x^p + 3x^q where p and q are constants.

    4) Given that 2x^2-x^3/2 can be written in the form 2x^p + x^q , write down the value of p and q.



    Thank you so much xxxx
    • Thread Starter
    Offline

    2
    ReputationRep:
    Please???
    Offline

    1
    ReputationRep:
    (Original post by M00ND4NC3R)
    Can you please answer these questions and explain how you did it. Thank you x

    1) (root32+root18)/3+root2

    2) A rectangle has an area of 4root5-4 and al ength of one side is 1+root5. Find the length of the other side in the form a+bRoot5

    3) Write (2rootX+3)/x in the form 2x^p + 3x^q where p and q are constants.

    4) Given that 2x^2-x^3/2 can be written in the form 2x^p + x^q , write down the value of p and q.



    Thank you so much xxxx
    What have you tried?
    Offline

    1
    ReputationRep:
    For question 1, you divide by 3 - root2, instead of 3 + root2.
    Offline

    3
    ReputationRep:
    (Original post by Hanzou)
    Attachment 585438
    Sorry I didn't get the last one 😅


    Posted from TSR Mobile
    Posting full solutions is against the rules of this forum- it's much more helpful to guide the OP towards getting the answer themselves rather than giving it to them on a plate.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Hanzou)
    Attachment 585438
    Sorry I didn't get the last one 😅


    Posted from TSR Mobile
    Thank you so much xxx
    Offline

    0
    ReputationRep:
    Q1:
    1. Get top in terms of root 2 by simplifying into factors
    2. Simplify
    3. Rationalise the denominator

    Q2:
    1.Draw diagram (this always helps so much haha)
    2. Name unknown side x
    3. Form equation where both sides multiply to get the area
    4. Solve equation to find x

    Q3:
    1. Split fractions into two parts with denominator x
    2. Simplify each term (i.e. find in terms of indices instead of fractions, for example (a^3/2)/(a^2) = a^-1/2)

    I'm not sure for Q4, see if you definitely copied down equation correctly and if yes try forming equations where you can factorise out factors of x
 
 
 
Poll
Which party will you be voting for in the General Election 2017?
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

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