Geometric progressions

If a,b ,c,d and p are different real numbers such that :(a²+b²+c²)p²-2(ab+bc+cd)p+(b²+c²+d²)â‰¤0, then show that a,b,c and d are in G.P

2 Answers

(ap-b)²+(bp-c)²+(cp-d)²â‰¤0

But sum of three squares..

so ap=b, bp=c and cp=d

so they are in GP

@Kajal...nishant did it correctly....

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