If a b c d and p are different real numbers such that | Example 23 Chapter 9 Class 11

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If a, b, c, d and p are distinct non zero real numbers such that (a2 + b2 + c2) p2 –2(ab + bc + cd)p + (b2 + c2 + d2) ≤ 0 then a,b,c,d are in
Example 23 Chapter 9 Class 11

If a, b, c, d and p are different real numbers such that (a^2 + b^2 + c^2)p^2 -2(ab + bc + cd) p + (b^2 + c^2+d^2)≤0, then show that a, b, c, d are in GP

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Than you soo much sir .
You explain the whole concept easily.. 👍👍🙏

meenuarora