Question 55701
{{{x^3-2x^2-x+2}}}  When you have four terms that is a hint that you may need to factor by grouping.
{{{(x^3-2x^2)+(-x+2)}}}  Factor the GCF from each parenthesis, that will make them match:
{{{x^2(x-2)-1(x-2)}}}  Factor out the common factor of x-2
{{{(x-2)(x^2-1)}}}  Notice that there is a difference of squares in the 2nd set of parenthesis and factor.
{{{(x-2)(x-1)(x+1)}}}
Happy Calculating!!!