My answers, excessive? Perish the thought! :pBrent@GMATPrepNow wrote:Ah, good call about the distance formula vs the circle equation.
I think you system-solving solution should come with a "do not try this at home" warning
Cheers,
Brent
I agree that the geometric solutions are much better if you remember them, or can think them up. But I've been in pinches on plenty of math tests where I've had to use brute force, so it's nice to know how to grind out an answer (if you must).













