Question

Calculează: 2la puterea1994-2x(2la puterea1994-2+2la puterea1991+2la Puterea1992) Va rog

Answer 1

$2^{1994} - 2 \times ( {2}^{1994} - 2 + {2}^{1991} + {2}^{1992}) = \\ \\ - {2}^{1994} + 4 - 2 \times {2}^{1991} - 2 \times {2}^{1992}$