Question

If f(n)=(n-1)2+"f(n) = (n -1)2 + 3n" alt="f(n) = (n -1)2 + 3n" align="absmiddle" class="latex-formula">
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Answer 1

Distribute the 2 first.

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

Combine like terms.

f(n) = 5n - 2