8ksquared2+4k-3ksquared2+3squared2-k+5
The reason you have not received a reply by now is probably due to the fact that your expression is quite ambiguous.
is it 8k^2 + 4k - 3k^2 + 3^2 - k + 5 ?
this would reduce to 5k^2 + 3k + 14
What about it?