Question

if a,b,c are in GP then find the value of b​

Answer 1

Answer:

but you didn't give any equation

Explanation:

ANSWER

Given, a,b,c are in G.P.

Thus, their common ratio must be equal.

Let the common ratio be r.

Thus, r=

a

b

=

b

c

....(1)

⇒b

2

=ac⇒a=

c

b

2

Then value of

b−c

a−b

=

b−c

c

b

2

−b

=

c(b−c)

b

2

−bc

=

c(b−c)

b(b−c)

=

c

b

=

b

a

....From (1)