4x3la puterea 1995 - 3 la puterea 1996 - 3 x 3 la puterea 1994 = = 4 x 3 x 3 la puterea 1994 - 3 la puterea 2 x 3 la puterea 1994 - 3 x 3 la puterea 1994 = = 3 la puterea 1994 x ( 4 x 3 - 3 la puterea 2 - 3 ) = = 3 la puterea 1994 x ( 12 - 9 - 3 ) = = 3 la puterea 1994 x 0 = 0
