92011 92011
  • 19-07-2018
  • Mathematics
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middle term (√x+√y)^8

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Аноним Аноним
  • 19-07-2018

There is 9 terms in the expansion so the middle term is the 5th.


(r + 1)th term of (a + b)^n = nCr a^(n-r) b^r


So here 5th term = (4 + 1)th term


= 8C4 (x^1/2)^(8-4) (y^1/2)^4


= 70 x^2 y^2 answer

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