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Help with math question?( GCSE Quadratics with the Formula) watch

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    The product of two consectuative numbers is 1806.Let n be the smaller number.
    a) Show that n^2 + n -1806 = 0


    b) Find the value of n.



    I dont understand how I am supposed to find this? Could someone please explain. Dont tell me the answer please I just need to know how to do it.
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    write out two consecutive numbers as algebra and see what hapens when you expand it
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    If n is the smaller number then the next number is (n+1), make an equation from the statement you're given. From there you should be able to see where you get the equation you are given.

    For part b, you could use the quadratic equation, if your allowed a calculator, this is the easiest way to solve it. I recommend learning it will make your mathematics a lot more easier.
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    (Original post by Fordrin)
    If n is the smaller number then the next number is (n+1), make an equation from the statement you're given. From there you should be able to see where you get the equation you are given.

    For part b, you could use the quadratic equation, if your allowed a calculator, this is the easiest way to solve it. I recommend learning it will make your mathematics a lot more easier.
    I still dont understnad the first part...

    I kind of just messed around witht eh calculator and got the answer for part b. Would I still get 2 marks out of 2 if I just put the answer or do I still have to put the working out?
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    (Original post by hannah.xo)
    The product of two consectuative numbers is 1806.Let n be the smaller number.
    a) Show that n^2 + n -1806 = 0


    b) Find the value of n.



    I dont understand how I am supposed to find this? Could someone please explain. Dont tell me the answer please I just need to know how to do it.
    You have two consecutive numbers, n and n+1. We know that n(n+1)=1806 from the info, so you can rearrange this to show the equality in part (a). Then finding the value is just solving the quadratic in (a)
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    (Original post by hannah.xo)
    I still dont understnad the first part...

    I kind of just messed around witht eh calculator and got the answer for part b. Would I still get 2 marks out of 2 if I just put the answer or do I still have to put the working out?
    Just right down what u put in the calculator

    If you think about it consecutive is just adding 1 more. So adding 1 more to n is (n+1), I think someone else may have explained it better than me.
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    (Original post by hannah.xo)
    I still dont understnad the first part...

    I kind of just messed around witht eh calculator and got the answer for part b. Would I still get 2 marks out of 2 if I just put the answer or do I still have to put the working out?
    you would probably get no marks for trial and error.
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    (Original post by RDKGames)
    You have two consecutive numbers, n and n+1. We know that n(n+1)=1806 from the info, so you can rearrange this to show the equality in part (a). Then finding the value is just solving the quadratic in (a)
    Oh that makes sense now, Thank you
 
 
 
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