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If the coefficients of x^(3) and x^(4) i...

If the coefficients of `x^(3) and x^(4)` in the expansion of `(1+ax+bx^(2))(1-2x)^(18)` in powers of x are both zero, then (a,b) is equal to:

A

`(14,(251)/(3))`

B

`(14,(272)/(3))`

C

`(16,(272)/(3))`

D

`(16,(251)/(3))`

Text Solution

Verified by Experts

The correct Answer is:
C
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