Answer:
-9 x^4 y^2 + x^2 y^3 - 12 x^4 y^4
Step-by-step explanation:
you combine like terms for the x^4 and y^2 terms:
: you get -9x^4y^2
you combine like terms for the x^2 and y^3 terms:
: you get x^2y^3
you combine like terms for the x^4 and y^4 terms:
: you get -12x^4y^4
ps: the ^ symbol means the base to that power so (x^4 = x to the 4th power)
Hope I helped you ;)
