Question

F(n)=n^3-2n^2g(n)=-2n-1Find(f-g)(3)

Answer 1

The function are given f(n)=n^3-2n^2 and g(n)=-2n-1 .

To determine the value of (f-g)(3) ,

`(f-g)(3)=3^3-2*3^2+2*3+1=27-18+6+1`
`28-18+6=10+6=16`

Hence the answer is 16.