Can anyone isolate a from this equation:
(x-a)^2 = x^2 + y^2
I get as far as a = y^2/a-2x, but don't know where to go fro there.
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Thanks, it was suprisingly simple, I was just starting from the wrong place. Thanks again!
EDIT: I've stumpled upon another algebretic type problem,
using the above value for a is it possible to prove that
(y/-a)^2 = -1?
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