Q8 of 176 Page 20

If a, b, c are in G.P., prove that :

Now, as a,b,c are in GP.


Using the idea of geometric mean we can write –


∴ b2 = ac …(1)


Put in the LHS of the given equation to be proved –


⇒ LHS =


⇒ LHS =


⇒ LHS =


⇒ LHS = = RHS


Hence Proved.


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