Question

If f(x) = x^1/2 -x and g(x)= 2x^3-x^1/2-x, fone f(x)-g(x)

Answer 1

Subtract the two functions.
(x^1/2-x)-(2x^3-x^1/2-x)
Distribute the negative
x^1/2-x-2x^3+x^1/2+x
Simplify
-2x^3+2x^1/2 is the answer