Answer:
-1x^3y^3 + 3x^2y + 2xy
Step-by-step explanation:
first you find any like terms. 2x^3y^3 and 32x^3y^3 can be added together because they both have x^3y^3. When I was learning this, something that helped me find like terms (I had a lot of trouble) was say there is 2x^2 and 2x^3, they can't be added together because x^2 and x^3 are different- like turtles and tigers in zoos. They both have z but they shouldn't belong together.
Anyways, 2x^3y^3 + negative 3x^3y^3 would subtract 3x^3y^3 from 2x^3y^3 because 2x^3y^3 came before -3x^3y^3 in the sentence. That leaves you with-
-1x^3y^3
There is also x^2y and 2x^2y which adds up to 3x^2y. Think of these xy things as labels, just add the numbers at the front, only add ones with the same labels.
3xy and -xy add up to 2xy.
This leaved you with -1x^3y^3 + 3x^2y + 2xy
(-1x-cubed y-cubed + 3x-squared y + 2xy)
hope this helps.
