Simplify the polynomial. 2x2−6x+7x −8+4x2+1 (1 point) Responses −6x2+13x−7 negative 6 x squared plus 13 x minus 7 6x2+x−7 6 x squared plus x minus 7 2x2−x−8 2 x squared minus x minus 8 −2x2+x+9

6x2+x−7

(6 x squared plus x minus 7)