Question

Calculati (utilizand, eventual , factorul comun )

b ) (36 x 1998 - 1997 x 36 ) x 54 - ( 8654 - 4 x 86 x 25 ) x 36

c) 1997 x 109 - 199700 - 1997 x 7 - 1997

Answer 1

b)
36 (1998-1997)×54-(8654-8600)×36
36×1×54-54×36
=0

c)
217673-199700-13979-1997
1997