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+84m2n2−8n3b343m6+294m4n+84m2n2+8n3343m^6 + 294m^4 n + 84m^2 n^2 + 8n^3343m6+294m4n+84m2n2+8n3c343m6−8n3343m^6 - 8n^3343m6−8n3d7m6−294m4n+84m2n2−2n37m^6 - 294m^4 n + 84m^2 n^2 - 2n^37m6−294m4n+84m2n2−2n3ব্যাখ্যাUsing (A−B)3=A3−3A2B+3AB2−B3(A-B)^3=A^3-3A^2B+3AB^2-B^3(A−B)3=A3−3A2B+3AB2−B3 with A=7m2, B=2nA=7m^2,\ B=2nA=7m2, B=2n gives 343m6−294m4n+84m2n2−8n3343m^6-294m^4n+84m^2n^2-8n^3343m6−294m4n+84m2n2−8n3.