johna317 johna317 01-02-2018 Mathematics contestada find(f+g)(x) if f(x)=3x+5 and g(x)= -2x^2-5x=3A. (f+g(x)=-2x^2+8x+8B. (f+g)(x)=-2x^2-2x+8C. (f+g)(x)=-4x+8D. (f+g)(x)=-2x+8