Subraction

Question

(1/6x^3-1/10x-1/5)-(-1/6x^3+1/10x-1/5)

Answer 1

(1/6x^3-1/10x-1/5)-(-1/6x^3+1/10x-1/5)
= (1/6)x^3 - (1/10)x - 1/5 + (1/6)x^3 - (1/10)x + 1/5
= (1/3)x^3 - (1/5)x
or
x^3/3 - x/5