Maths question

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    (Original post by DylanJ42)
    oh sorry, maybe I should have done it like this;

     \displaystyle f(x) + 2 = (x-1)(x+2) + 2
     \displaystyle f(x) + 2 = (x^2 + 2x - x - 2) + 2

    Now I just simplify the x terms ie simplfy  \displaystyle 2x - x

     \displaystyle f(x) + 2 = (x^2 + x - 2) + 2

    Is that easier to see now?

    Now from here you have  \displaystyle f(x) + 2 = (x^2 + x - 2) + 2

    do you see how the -2 and + 2 "cancel out" leaving you with;

     \displaystyle f(x) + 2 = x^2 + x

    now factoring out an x gives us  \displaystyle f(x) + 2 = x(x + 1)

    thanks so much
    I got f(x) +2 = x2 + x
    and then i factorise to get x(x+1)
    make x = 0
    I'm left with x=-1 and x=0?
    thanks for the time
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    (Original post by samantham999)
    thanks so much
    I got f(x) +2 = x2 + x
    and then i factorise to get x(x+1)
    make x = 0
    I'm left with x=-1 and x=0?
    thanks for the time
    ya, set x(x+1) equal to 0 and solve to get x=-1 and x=0, perfect

    good job
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    (Original post by DylanJ42)
    oh sorry, maybe I should have done it like this;

     \displaystyle f(x) + 2 = (x-1)(x+2) + 2
     \displaystyle f(x) + 2 = (x^2 + 2x - x - 2) + 2

    Now I just simplify the x terms ie simplfy  \displaystyle 2x - x , and im left with;

     \displaystyle f(x) + 2 = (x^2 + x - 2) + 2

    Is that easier to see now?

    Now from here you have  \displaystyle f(x) + 2 = (x^2 + x - 2) + 2

    do you see how the -2 and + 2 "cancel out" leaving you with;

     \displaystyle f(x) + 2 = x^2 + x

    now factoring out an x gives us  \displaystyle f(x) + 2 = x(x + 1)
    btw, I'm so sorry for making you write the expanding brackets part I actually got that earlier on but was confused because i forgot to factorise
    thanks x
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    (Original post by DylanJ42)
    ya, set x(x+1) equal to 0 and solve to get x=-1 and x=0, perfect

    good job
    are you doing maths at uni? or are you doing a2?
    i'm doing 6 units of maths lool :l
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    (Original post by samantham999)
    btw, I'm so sorry for making you write the expanding brackets part I actually got that earlier on but was confused because i forgot to factorise
    thanks x
    its no problem at all, glad you understand it now
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    (Original post by DylanJ42)
    its no problem at all, glad you understand it now
    are you doing maths at uni? or are you doing a2?
    i'm doing 6 units of maths lool :l
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    (Original post by samantham999)
    are you doing maths at uni? or are you doing a2?
    i'm doing 6 units of maths lool :l
    finished A2, I am on a gap year atm. Going to do maths and compsci next year if all goes to plan

    yea i thought I recognised your name from the thread you made a fews about it. Are you AS atm doing maths early so you can do FM next year? or did you just take it up in A2 and only have a year to finish it?

    I am also doing 6 this year :laugh:
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    (Original post by DylanJ42)
    finished A2, I am on a gap year atm. Going to do maths and compsci next year if all goes to plan

    yea i thought I recognised your name from the thread you made a fews about it. Are you AS atm doing maths early so you can do FM next year? or did you just take it up in A2 and only have a year to finish it?

    I am also doing 6 this year :laugh:
    I'm on a gap year and I need maths for economics at university
    I like maths tbh, great subject but it needs a lot of work

    I may consider doing further maths AS during my first year at uni though

    good luck! i hope you get in, i feel annoyed i'm not going uni this year but if we get the best grades we are off next year!
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    Can someone help me on this please?

    Just need to know how to work it out.


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    (Original post by samantham999)
    I'm on a gap year and I need maths for economics at university
    I like maths tbh, great subject but it needs a lot of work

    I may consider doing further maths AS during my first year at uni though

    good luck! i hope you get in, i feel annoyed i'm not going uni this year but if we get the best grades we are off next year!
    oh i see, yea its quite the subject, maybe even the best one

    good luck to you too yea but taking a year out will hopefully improve the next 3 of our lives so its worth it imo

    Also keep asking questions on here when you are stuck, tsr is a great learning resource
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    (Original post by z_o_e)
    Can someone help me on this please?

    Just need to know how to work it out.


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    1 and half times by 12=£18

    then add all the total of all the prices.
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    (Original post by DylanJ42)
    oh i see, yea its quite the subject, maybe even the best one

    good luck to you too yea but taking a year out will hopefully improve the next 3 of our lives so its worth it imo

    Also keep asking questions on here when you are stuck, tsr is a great learning resource
    I know right, theres no point doing to a university that lets be honest isn't that great just to spend the next 3 years miserable.
    I will for sure, thank you a lot for your time x
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    (Original post by maruchan)
    1 and half times by 12=£18

    then add all the total of all the prices.
    THANK YOU!
    Finally.
    I thought I had to find the total and divide it by 12!

    Tho I didn't want the answer! Thank you!!!

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    (Original post by z_o_e)
    THANK YOU!
    Finally.
    I thought I had to find the total and divide it by 12!

    Tho I didn't want the answer! Thank you!!!

    Posted from TSR Mobile
    you're welcome
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    sorry for giving the answer
 
 
 
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