(1/2x+6)+(1/3-x)+{x/2(x2-a)}怎样简化

Question

(1/2x+6)+(1/3-x)+{x/2(x2-a)} 怎样简化

Answer 1

(1/2x+6)+(1/3-x)+{x/2(x2-a)}
=1/2x+6+1/3-x+x^3/2-ax/2
=x^3/2-x-ax/2+1/2x+19/3