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    c=b **square root**a+d
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    please help
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    (Original post by AlevelMaths42)
    please help
    what have you done so far?
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    get rid of the root by squaring both sides and start from there



    (Original post by AlevelMaths42)
    c=b **square root**a+d
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    (Original post by solC)
    what have you done so far?
    I got a= c^2-b-d
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    (Original post by AlevelMaths42)
    I got a= c^2-b-d
    what did you do to get to that?
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    That is impossible to solve unless you have the values for b c and d or are meant to give it in terms of b c and d in which case it is just rearranging
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    (Original post by solC)
    what did you do to get to that?
    square to get rid off the square root so i had c^2=b+a+d
    then just subtract them
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    (Original post by AlevelMaths42)
    square to get rid off the square root so i had c^2=b+a+d
    then just subtract them
    If you square both sides remember you need to square the b too, so after you square both sides you should have
     c^2=b^2(a+d)
    so you then need to divide both sides by b^2 and subtract d
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    (Original post by solC)
    If you square both sides remember you need to square the b too, so after you square both sides you should have
     c^2=b^2(a+d)
    so you then need to divide both sides by b^2 and subtract d
    Okay thanks but how do i write it? like this?

    c^2-d/b^2=a
    or
    (c^2/b^2)-d=a
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    (Original post by AlevelMaths42)
    Okay thanks but how do i write it? like this?

    c^2-d/b^2=a
    or
    (c^2/b^2)-d=a
    the second one
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    (Original post by solC)
    the second one
    okay thanks
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    (Original post by AlevelMaths42)
    okay thanks
    No worries
 
 
 
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