2 ms·
> "Note that x(x+3) = 18 and x(x-3) = 18 are valid models of the same problem. One finds the longer side in terms of the shorter, or vice versa" That is the re
by __rito__ 2y ago
> "Note that x(x+3) = 18 and x(x-3) = 18 are valid models of the same problem. One finds the longer side in terms of the shorter, or vice versa"
That is the reason I made the mistake initially. They both were correct in my mind.
But that's no excuse for the mistake, and I made a correction.