Let f(x)=−2x2+3x−6 and g(x)=5−4x−8x2. Which equation shows h( x), where h(x)=f(x)+g(x)?

h(x)=3x2−x−14

h(x)=6x2+7x−11

h(x)=−10x2−x−1

h(x)=−10x2−7x−11