Show that (4x−1)(2x+3)(x+2)=8x3+26x2+17x−6(4x - 1)(2x + 3)(x + 2) = 8x^3 + 26x^2 + 17x - 6(4x−1)(2x+3)(x+2)=8x3+26x2+17x−6 for all values of xxx.