The simplify function is not completely simplifying my polynomials.

I am struggling to figure out why the simplify function will not completely simplify my polynomials.

(3x-4)(x^2 – 2x + 4) is what I am trying to simplify to (3x^3-10x^2+20x-16) but it just spits back out my original.

My code is below.

clear
clc
syms x
prob2 = ((3*x-4)*(x^2-2*x+4));
problem2 = simplify(prob2)

problem2 = 

Answer 1

[Matt J]

syms x
prob2 = ((3*x-4)*(x^2-2*x+4));
problem2 = expand(prob2)

problem2 =