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    I've attempted this question (link below) several times but am not obtaining the correct answer.

    I know it's probably a stupid mistake, but does anyone know where I'm going wrong?

    Thanks!


    Question + my attempt at it:

    http://cl.ly/image/1k39252s2X45
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    Line 11, you made an error when dividing by b^2 (not sure why you even did this in the first place). (a/b)/b=a/b^2, not (as you thought) (a/b)/b=a/(b/b)=a/a=a.
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    (Original post by james22)
    Line 11, you made an error when dividing by b^2 (not sure why you even did this in the first place). (a/b)/b=a/b^2, not (as you thought) (a/b)/b=a/(b/b)=a/a=a.

    Thanks, I'll consider this in my next attempt.
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    Nope, now I have a quartic equation, which I'm not expected to know how to solve, so I know I've taken a 'wrong turn' somewhere. I'm very prone to stupid mistakes in maths, but I can't find any. Any help appreciated, thanks.

    New attempt: http://cl.ly/image/0W2s0v1c241m
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    (Original post by RossK)
    Nope, now I have a quartic equation, which I'm not expected to know how to solve, so I know I've taken a 'wrong turn' somewhere. I'm very prone to stupid mistakes in maths, but I can't find any. Any help appreciated, thanks.

    New attempt: http://cl.ly/image/0W2s0v1c241m
    That's really just a quadratic, which you do know how to solve.

    I cannot see any errors in that attempt.
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    (Original post by james22)
    That's really just a quadratic, which you do know how to solve.

    I cannot see any errors in that attempt.
    Success!

    Thank you so much
 
 
 
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