(а^2+1)(а-2)-а(а^2+1)
Expand the bracketsa^3-2a^2+a-2 -a^3-aSimplify-(2a^2-2)
(a^2+1)(a-2) -a(a^2+1)We perceive that a^2+1 is our common factor of the two terms. Therefore, we have:(a^2+1)(a-2-a) (distributive property)= (a^2+1)*(-2)= -2a^2 -2The final answer is -2a^2 -2~
