In which of the following expressions does the "x" term have a coefficient of 1?

Question

Responses

2x2−2x−1
2 x squared minus 2 x minus 1

3x2+x−8
3 x squared plus x minus 8

x2+3x+4
x squared plus 3 x plus 4

2x2−x+1

Answer 1

2x2−x+1