nataoli4756 nataoli4756

09-03-2018
Mathematics

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(x + 2) is raised to the fifth power. The third term of the expansion is:
A. C(5, 3)x³2²
B. C(5, 3)x²2³
C. C(5, 2)x³2²,

Respuesta :

Kalahira Kalahira

17-03-2018

Ans. C In binomial expansion of (a +b)^n: Tr = (r+1)'th term = C(n, r). a^(n-r) . b^r Here, n = 5 and r = 2 So, here T3 = C(5, 2) x^3 . 2^2

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