Find the value of the expression n^3+5 n^2+5 n-2, when n = – 2. - Vidyadip

Question

Find the value of the expression $n^3+5 n^2+5 n-2$, when $n = – 2.$

✓

Answer

The given expression is: $n^3+5 n^2+5 n-2$
For $n=-2$, we have
$n^3+5 n^2+5 n-2=(-2)^3+5(-2)^2+5(-2)-2$
$=-8+20-10-2$
$=0$

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