Question

Efectuati:
a) 2 la 1994-2 la 1993
b) 3 la 1994+ 6x3 la 1993
c) 2 la 1993x3 la 1994 -3 la 1993x 2 la 1994 Dau coroana

Answer 1

a) 2^1994 - 2^1993 = 2^1993 x (2-1) = 2^1993 x 1 = 2^1993
b) 3^1994 + 6x3^1993 = 3 x 3^1993 + 6x3^1993 = 3^1993 x (3+6) = 3^1993 x 9 = 
    = 3^1993 x 3^2 = 3^1995
c) 2^1993 x 3^1994 - 3^1993 x 2^1994 = 2^1993 x 3^1993 x (3 - 2) = 2^1993 x 3^1993 x 1 = 2^1993 x 3^1993