Asked by mathhelper

(90x^22y^17−108x^17y^11+90x^16y^4)/−9x^5y^2

my answer is : -(2x^11y^2)(5x^6y^13-6xy^7+5)

but it says it can be simplified more? how much more can you simplify?!
Answered by oobleck
your answer is correct. Maybe they just want you to expand it out instead of leaving it factored.