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Tamiku [17]
3 years ago
7

Find the value of the coefficient of

Mathematics
1 answer:
Korolek [52]3 years ago
7 0
The solution to the problem is as follows:
<span>
the genaral term is 5Cr(-1)^r 2^r x^(5-2r) 
and so need 5-2r = -1 => r = 3 
Coeff is then 5C3 (-1)^3 2^3 = -80
</span>
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