Answer:
1
Step-by-step explanation:
9
Take half of the coefficient of x and square it.
-6/2 = -3
Square -3 to get 9.
Answer: 9
-17
c - 5a
substitute c for -2
-2 - 5a
substitute a for 3
-2 - 5*a
-2 - 5*3
-2 - 15