## Elementary Technical Mathematics

$$x^3+3x-3.$$
We subtract the $x^3$-terms as follows $$2x^3-x^3=x^3$$ then subtract the $x$-terms as follows $$4x-x=3x$$ then subtract the constant terms as follows $$-1-2=-3$$ Hence the result is $$x^3+3x-3.$$