Show that (5x−4)(3x+1)(2x−7)=30x3−119x2+41x+28(5x - 4)(3x + 1)(2x - 7) = 30x^3 - 119x^2 + 41x + 28(5x−4)(3x+1)(2x−7)=30x3−119x2+41x+28 for all values of xxx.