k and m are different integers
Currently, k=m, because both k and m equal to 12
\(12 \sqrt{12} = k \sqrt{m}\)
The variable m is the value under the square root symbol, rather than the value that results when m is placed under the square root symbol.
So if k and m are currently equal, but k must be different than m, how can we increase k or m ?? Factoring the square root
\(12 \times \sqrt{12} \)
\(12 \times \sqrt{4} \times \sqrt{3}\)
\(12 \times \pm 2 \times \sqrt{3}\)
\(24 \times \sqrt{3}\) or \(-24 \times \sqrt{3}\)
Now \(k = 24\) or \(k = -24\) and \(m=3\). Find \(k+m\): \(24+3=27\) or \(-24+3=-21\)
B and E are the answers
Guys, above is the official explanation. In my opinion, it is clearly bogus because the \(\sqrt{4}\) cannot be \(\pm2\) . For the GRE it is only +2 the positive root accepted.
Waiting for GreenLightTestPrep for insights