Respuesta :
distribute this one
so lets start with the x variable
x*x^3
x*5x^2
x*19x
then lets go to 4
4*x^3
4*5x^2
4*19x
so the WHOLE answer is
x^4+4x^3+3x^3+20x^2+19x^2+76x
so lets start with the x variable
x*x^3
x*5x^2
x*19x
then lets go to 4
4*x^3
4*5x^2
4*19x
so the WHOLE answer is
x^4+4x^3+3x^3+20x^2+19x^2+76x