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If the coefficients of x^(2) and x^(3)ar...

If the coefficients of `x^(2)` and `x^(3)`are both zero, in the expansion of the expression `(1 + ax + bx^(2)) (1 - 3x)^15` in powers of x, then the ordered pair (a,b) is equal to

A

(28, 315)

B

(-21, 714)

C

(28, 861)

D

(-54, 315)

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The correct Answer is:
A
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