please help
Original post by AlevelMaths42
please help
what have you done so far?
get rid of the root by squaring both sides and start from there
Original post by AlevelMaths42
c=b **square root**a+d
Original post by solC
what have you done so far?
I got a= c^2-b-d
Original post by AlevelMaths42
I got a= c^2-b-d
what did you do to get to that?
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
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
Original post by AlevelMaths42
square to get rid off the square root so i had c^2=b+a+d
then just subtract them
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
so you then need to divide both sides by and subtract d
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
so you then need to divide both sides by and subtract d
so you then need to divide both sides by 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
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
c^2-d/b^2=a
or
(c^2/b^2)-d=a
the second one
Original post by solC
the second one
okay thanks
Original post by AlevelMaths42
okay thanks
No worries
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