(3x + 2) (2x - 7) = ax^2 + kx + n . What is the value of a - n + k ?	Select the correct option:
A) 3  B) 8  C) 9  D) 10  E) 11
Expanding we have 6x^2 - 21x + 4x -14   6x^2 - 17x - 14   Taking coefficients, a = 6, k= -17, n = -14   Therefore a - n + k = 6 - (-14) - 17 = 20 - 17= 
<gadget id="calculator">20 - 17</gadget>
<output>3</output>
3   The answer is 3.
<result>A</result>
(3x + 2) (2x - 7) = ax^2 + kx + n . What is the value of a - n + k ?