7x2¹⁹⁹⁷-6x2¹⁹⁹⁶-2x2¹⁹⁹⁸

Răspuns :

7x2¹⁹⁹⁷-6x2¹⁹⁹⁶-2x2¹⁹⁹⁸ =

= 2^1996 ( 7× 2^1 - 6 - 2 × 2^2) =

= 2^1996 ( 14 - 6 - 8) =

= 2^1996 × 0 =

= 0