If f(n)=(n-1)2+ f(n) = (n -1)2 + 3n ​

Question

If f(n)=(n-1)2+

`f(n) = (n -1)2 + 3n`
​

Answer 1

Distribute the 2 first.

f(n) = 2n - 2 + 3n

Combine like terms.

f(n) = 5n - 2