Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta

Maths GCSE exam question thread watch

Announcements
    • Political Ambassador
    • Thread Starter
    Offline

    20
    ReputationRep:
    Political Ambassador
    i'm making this thread in hopes of getting help on questions i find difficult on past papers, i will be bumping this everytime i find a question hard to understand, so please help out if you can my non-calc is on wednesday and calc is on tuesday next week. the faster the help, the better

    the first question is silly but i honestly have no idea what else it wants :/

    ''solve y^2=49''
    you must write down all possible solutions

    it's worth 2 marks, what is the other mark?
    • Very Important Poster
    Offline

    21
    ReputationRep:
    Very Important Poster
    (Original post by ihatePE)
    i'm making this thread in hopes of getting help on questions i find difficult on past papers, i will be bumping this everytime i find a question hard to understand, so please help out if you can my non-calc is on wednesday and calc is on tuesday next week. the faster the help, the better

    the first question is silly but i honestly have no idea what else it wants :/

    ''solve y^2=49''
    you must write down all possible solutions

    it's worth 2 marks, what is the other mark?
    There are two solutions.
    Offline

    18
    ReputationRep:
    you need to work out the value of y and because y is squared which equals 49 to find y which is the oppopsite way of solving the equation you do the square root of 49 which is 7 so y=7.

    Hope that helps
    (i think it's right)
    Offline

    18
    ReputationRep:
    (Original post by SeanFM)
    There are two solutions.
    Is it y=7 or y=-7 ? because -7 squared makes positive 49
    • Very Important Poster
    Offline

    21
    ReputationRep:
    Very Important Poster
    (Original post by xGCSE_Studentx)
    Is it y=7 or y=-7 ? because -7 squared makes positive 49
    Both
    Offline

    18
    ReputationRep:
    (Original post by SeanFM)
    Both
    Yay! i'm happy i got it right algebra's like the only thing i can do in maths
    • Political Ambassador
    • Thread Starter
    Offline

    20
    ReputationRep:
    Political Ambassador
    (Original post by xGCSE_Studentx)
    Is it y=7 or y=-7 ? because -7 squared makes positive 49
    see this is why i feel like i will make silly mistakes, i didnt even give the negatives a thought
    Offline

    18
    ReputationRep:
    (Original post by ihatePE)
    see this is why i feel like i will make silly mistakes, i didnt even give the negatives a thought
    tbh i didn't either until seanFM mentioned that but dw when you check your paper always read what the question asks for - i'm not the best person to ask about maths though
    Offline

    21
    ReputationRep:
    (Original post by ihatePE)
    see this is why i feel like i will make silly mistakes, i didnt even give the negatives a thought
    Every mistake now that is overcome, is one mistake less in the exam!
    • Political Ambassador
    • Thread Starter
    Offline

    20
    ReputationRep:
    Political Ambassador
    (Original post by jamestg)
    Every mistake now that is overcome, is one mistake less in the exam!
    hopefully i can keep those in mind, it might just go out the other ear lol
    Offline

    21
    ReputationRep:
    (Original post by ihatePE)
    hopefully i can keep those in mind, it might just go out the other ear lol
    Just work on those mistakes. If you don't work on them, you won't improve.

    Constantly getting minus numbers wrong? Who cares you're in Y11?! Watch a video and do questions on them. Still cancelling algebraic fractions incorrectly, re learn the stuff and try again. YOU'VE GOT SO MUCH TIME TO IMPROVE BETWEEN NOW AND JUNE - USE IT WISELY!
    Spoiler:
    Show
    trust me I got 196/200
    • Political Ambassador
    • Thread Starter
    Offline

    20
    ReputationRep:
    Political Ambassador
    Bump


    find the integer that satisfies the equation x^3 - 2x = 21
    show all your workings

    i've never even gone through solving equations like this before where there's two unknown values T_T
    Offline

    2
    ReputationRep:
    (Original post by ihatePE)
    Bump


    find the integer that satisfies the equation x^3 - 2x = 21
    show all your workings

    i've never even gone through solving equations like this before where there's two unknown values T_T
    Oh wait, my bad didn't read the question properly
    • Political Ambassador
    • Thread Starter
    Offline

    20
    ReputationRep:
    Political Ambassador
    (Original post by Megan_101)
    Factor theorem?
    sorry that is definitely not on my specification is there anyway around it? a more simpler way? it was on 2014's wjec paper so the specification definitely should still be the same as now
    Offline

    2
    ReputationRep:
    (Original post by ihatePE)
    Bump


    find the integer that satisfies the equation x^3 - 2x = 21
    show all your workings

    i've never even gone through solving equations like this before where there's two unknown values T_T
    You could keep substituting values in for x until you get the right answer? It's pretty obvious when you think of it like that
    • Political Ambassador
    • Thread Starter
    Offline

    20
    ReputationRep:
    Political Ambassador
    (Original post by jamestg)
    Just work on those mistakes. If you don't work on them, you won't improve.

    Constantly getting minus numbers wrong? Who cares you're in Y11?! Watch a video and do questions on them. Still cancelling algebraic fractions incorrectly, re learn the stuff and try again. YOU'VE GOT SO MUCH TIME TO IMPROVE BETWEEN NOW AND JUNE - USE IT WISELY!
    Spoiler:
    Show
    trust me I got 196/200
    im so jelly of you, that is sooo good, but honestly, i really want to just end it this november, i dont want another two exams on top of the summers one :3
    • Political Ambassador
    • Thread Starter
    Offline

    20
    ReputationRep:
    Political Ambassador
    (Original post by Megan_101)
    You could keep substituting values in for x until you get the right answer? It's pretty obvious when you think of it like that
    will they not penalise you for that? i thought it would be more mathematical but thanks!
    Offline

    2
    ReputationRep:
    (Original post by ihatePE)
    sorry that is definitely not on my specification is there anyway around it? a more simpler way? it was on 2014's wjec paper so the specification definitely should still be the same as now
    Sorry, ignore that comment, didn't read the question properly
    Offline

    21
    ReputationRep:
    (Original post by ihatePE)
    im so jelly of you, that is sooo good, but honestly, i really want to just end it this november, i dont want another two exams on top of the summers one :3
    That really sucks, I really wanted to do it in november too but I obviously couldn't.

    Honestly, if you work really really hard between now and the exam, you won't need to revise maths during the exam season

    (I didn't during exam season, I just made sure that before exams started I understood everything and could answer pretty much any question!)
    Offline

    2
    ReputationRep:
    (Original post by ihatePE)
    will they not penalise you for that? i thought it would be more mathematical but thanks!
    I didn't do that exam board sorry but I doubt they would. If it's only a GCSE question it probably isn't that complicated .
 
 
 
Poll
Do you like carrot cake?
Useful resources

Study tools

Rosette

Essay expert

Learn to write like a pro with our ultimate essay guide.

Thinking about uni already?

Thinking about uni already?

See where you can apply with our uni match tool

Student chat

Ask a question

Chat to other GCSE students and get your study questions answered.

Creating

Make study resources

Create all the resources you need to get the grades.

Planner

Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.

Papers

Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

Help out other students

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.