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You are not logged in. #1 20060526 02:22:23
Why is this trueat a basic GCSE level, i am stuggling with this concept #2 20060526 02:56:45
Re: Why is this truea can only be 9 because the x² must match on both sides since you have an equal sign, thus b can only be 2 due to the same reason with x, which reduces the number of variables to 2. On the left side of the equation you still have b²9, which should be c according to the right side. With the already known b=2, c becomes 5. So the only variable you got left is x. Bang postponed. Not big enough. Reboot. #3 20060527 01:19:52
Re: Why is this truethanks, you have cleared things up alot, so it works, as long as each one is an actual number and not a function of x, that was the thing that kept catching me out, i simply couldn't see how it worked, but the assumption has to be made that it is not a function of x #4 20060527 03:35:54
Re: Why is this trueIf a, b or c is a function of x, it is usually written a(x), b(x) or c(x). Bang postponed. Not big enough. Reboot. 