Question

5. If a, b, c, d, e is in A.P., then the value of a – 4b + 6c – 4d + e is​

Answer 1

Explanation:

a,b,c,d,e are in AP

b = a+D

c = a+2D

d = a+3D

e = a+4D

a-4b+6c-4d+e

→ a-4(a+D)+6(a+2D)-4(a+3D)+(a+4D)

→ a-4a-4D+6a+12D-4a-12D+a+4D

→8a-8a

→0