(1/10*^2-1/2*-13/10)+(1/2*^2+1/4*-1/5)

let * = x

(1/10)x^2 - (1/2)x - 13/10 + (1/2)x^2 + (1/4x) -1/5

(5+1)/10 x^2 + (1-2)/4 x - (13+2)/10

(6/10)x^2 - (1/4)x -15/10

final answer: (3/5)x^2 -(1/4)x - 3/2