(2x^3 - 3x +1) - (x^2-3x-2) ok we distribute that negative all the way through the parentheses and this is what our problem looks like after we do that:
2x^3-3x+1 -x^2+3x+2 so no combine like terms
2x^3-x^2+3 *****notice how the -3x+3x canceled each other out*****
Comments
all you have to do is combine like terms see:
(2x^3 - 3x +1) - (x^2-3x-2) ok we distribute that negative all the way through the parentheses and this is what our problem looks like after we do that:
2x^3-3x+1 -x^2+3x+2 so no combine like terms
2x^3-x^2+3 *****notice how the -3x+3x canceled each other out*****
so your final answer is 2x^3-x^2+3