(3x2-7x-4)-(6x2-6x+1) Show your work.
A. -3x2-x-5
B. -3x2-13x+5
C. 9x2-x+5
D. 3x2-13x-5
First, distribute the negative sign to the second set of parentheses:
3x2 - 7x - 4 - 6x2 + 6x - 1
Next, combine like terms:
-3x2 - x - 5
Therefore, the answer is A. -3x2-x-5.