Question

If a/b=b/c, prove that (a + b + c)(a - b + c) = a2 +b2 +c2.​

Answer 1

Step-by-step explanation:

a,b,c are in GP

1. Let the terms to be a, ar, ar^2
2. Solve LHS and equate to RHS

Answer 2

This is how to prove , Byee