If f(x)=2x-3 and g(x)=x^2
Simplify (f+g)(x)
If f(x)=4x^{2}-x+2 and g(x)=-x^{2}-3x-5
Simplify (f-g)(x)
Simplify (f\cdot g)(x)
If f(x)=x^{2}-9x-10 and g(x)=x+1
Simplify \left( \frac{f}{g}\right)(x)
evaluate (f\cdot g)(6)