Question

5. If 2 1998 – 2 1997 - 21996 + 21995 = k. 21995. then find the value of k.
6. Fyaluate​

Answer 1

Answer:

By cross multiplication we get,

(21998/21995) – (21997/21995) – (21996/21995) + (21995/21995) = K

By the rule, am: an = am-n, m>n =

K = (21998 – 1995) – (21997 – 1995) – (21996 – 1995) + (21995 – 1995)

K = 23 - 22 - 21 + 20

K = 8-4-2-1

K = 3