10
- \(\begin{array} { c } \text { Prove by induction that } \mathrm { f } ( n ) = n ^ { 3 } + 3 n ^ { 2 } + 8 n \text { is divisible by } 6 \text { for all integers } n \geq 1
\text { [7 marks] }
\text { - }
\text { - }
\text { - }
\text { - }
\text { - }
\text { - }
\text { - }
\text { - } \end{array}\)
-
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