# If a, b, c are in

To prove: Given: a, b, c are in GP

Formula used: When a,b,c are in GP, b2 = ac

a, b, c are in GP,

b2 = ac … (i) … (ii)

Taking LHS = Substituting the value b2 = ac from eqn. (i)

LHS =   Substituting the value b = from eqn. (ii)  Multiplying and dividing with    = RHS

Hence Proved

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