Polynomials

Let f(x)=-3x^2+x-4, g(x)=-5x^2+3x-8, and h(x)=5x^2+5x+1. Express f(x)+g(x)+h(x) as a single polynomial, with the terms in order by decreasing degree.

 [ -3x^2+ x - 4 ]  +  [ -5x^2+3x - 8] + [ 5x^2+5x+1 ]   =

-3x^2 + 9x - 11