Răspuns:
[tex] {2}^{2974} \times {3}^{2} - {( {2}^{3} )}^{990} \times 3 \times {2}^{4} - {2}^{2974} = {2}^{2974} \times {3}^{2} - {3}^{2970 + 4} \times 3 - {2}^{2974} = {2}^{2974} \times (9 - 3 - 1) = {2}^{2974} \times 5[/tex]