Question 612889
(2/3x^2-1/2x-2/3)+(1/2x^2+1/4x-1/2)


2/3x^2-1/2x-2/3+1/2x^2+1/4x-1/2


(2/3x^2+1/2x^2)+(-1/2x+1/4x)+(-2/3-1/2)


7/6x^2-1/4x-7/6


So the expression simplifies to 7/6x^2-1/4x-7/6