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Annika Dyer
Mathematics
3 February, 03:55
Middle term (√x+√y) ^8
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Heath
3 February, 04:06
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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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