Question

solve this problem need urgent please ​

Answer 1

Answer:

Let A be the first term of the A.P. and D be the common difference of the A.P.

Given that,

a = pth term

Therefore,  b = qth term

Therefore,  c = rth term

Therefore,

LHS = (a-b)r +(b-c)p + (c-a)q

= ar - br + bp - cp + cq - aq

= -(aq - ar) - (br - bp) - (cp - cq)

= - [a(q - r)+ b(r - p) + c(p - q)]