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Suppose the runtime of a computer program is proportional to $n^{2}log(n)$ where $n$ is the input size. So $T(n)=k{n}^{2}log(n)$

where k is some constant.

Derive a rule of thumb that applies when we square the input size. That means first express $T(n^2)$ in terms of $T(n).$ Then

translate that relation to an English sentence of this form:

When we square the input size the runtime is multiplied by

$($Don$\text{'}$t use $\text{'}n\text{'}$ in your phrase, say something like 'the input size'.$)$