Help me im bad at math

Answer:
Choice C
Step-by-step explanation:
need:
a = 7
b = -5
c = -2
A) 7x^2 - 5x - 1
B) 7x^2 - 5x - 14
C) 7x^2 - 5x - 2
D) 7x^2 - 5x + 2