Show that (2x+5)(3x−1)(x−4)=6x3−11x2−57x+20(2x + 5)(3x - 1)(x - 4) = 6x^3 - 11x^2 - 57x + 20(2x+5)(3x−1)(x−4)=6x3−11x2−57x+20 for all values of xxx.
