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If a,b,c and d are in GP, then (a^2+b^2+...

If a,b,c and d are in GP, then `(a^2+b^2+c^2)(b^2+c^2+d^2)` is equal to

A

`(ab+bc+cd)^2`

B

`(ab-bc-cd)^2`

C

`(ab+bc+cd)`

D

None of the above

Text Solution

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The correct Answer is:
A
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