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)` in powers of x, then the ordered pair (a,b) is equal to

A

-28315

B

(-54,315)

C

(-21 , 714)

D

-24861

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The correct Answer is:

A

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