you can't take the square root of a negative number (or if you do the result is imaginary). this is because two negatives multiplied make a positive, same with two positives.
so set the whole thing equal to zero and solve for x.
Find the largest positive integer x such that
√(3620+322x−4x2)
is a real number.
3 answers
Shame on you Keshav!!! Cheating on Brilliant!!! This site is meant to be a platform to practice your own skills, not to copy paste the questions and get free answers and then get incentives without effort. So either play fair and be honest or leave this site. People like you are shame to the Brilliant community. And to the others, please give the answer to this problem after Monday 10/6/2013, so that this cheat doesn't get the opportunity to cheat.
10 year bump but nobody cares if hes cheating
55 answers