Question

given a/b=b/c
to prove eq in image​

Answer 1

Answer:

I have attached the solution.

Answer 2

Answer:

(A+b+c)(a-b+c)=a²+b²+c²

=A×A+B×(-B)+C×C=a²+b²+c²

=given A/b=b/c

A²+B²+C²=a²+b²+c²

A²/B²=B²/C²