C-03-Q089mediumsingle_mcqCube of (7m2−2n)=?(7m^2 - 2n) = ?(7m2−2n)=?a343m6−294m4n+84m2n2−8n3343m^6 - 294m^4 n + 84m^2 n^2 - 8n^3343m6−294m4n+84m