Question

write the coefficient of x^2 in each of the following
1) 2+x^2+x
2) 2-x^2+x3
3)π/2x^2+x

Answer 1

1. 1
2. -1
3. pie upon 2

Answer 2

1)1 is the coefficient 
2) -1 is the coefficient
3) pi/2 is the coefficient