Question 945675

{{{(-3a^2b^4+4ab^2+8ab)-(5a^2b^4+7ab^2-ab)}}}


{{{-3a^2b^4+4ab^2+8ab-5a^2b^4-7ab^2+ab}}}


{{{(-3a^2b^4-5a^2b^4)+(4ab^2-7ab^2)+(8ab+ab)}}}


{{{-8a^2b^4-3ab^2+9ab}}}


{{{ab(-8ab^3-3b+9)}}}