# How do you evaluate 2(n)^2 + 1 if n = 5?

Dec 21, 2015

Substitute $5$ for $n$ and evaluate the expression using the order of operations to find

$2 {n}^{2} + 1 = 51$ for $n = 5$

#### Explanation:

Plugging in $5$ for $n$ and following the order of operations (exponents before multiplication before addition):

$2 {\left(5\right)}^{2} + 1 = 2 \left(25\right) + 1$

$= 50 + 1$

$= 51$