Joelmontanohtx Joelmontanohtx 22-06-2020 Mathematics contestada For f(x)=4x+1 and g(x)=x^2-5 , find (fg) (x) . A.4x^3+x^2-20x-5 B.4x^3+x^2-5x-5 C.4x^3+x^2-4x-6 D.4x^2-19