Evaluate Using the Given Value 5x^2+x ; x=3

$5 x^{2} + x$ ; $x = 3$

Step 1

Replace the variable $x$ with $3$ in the expression.

$5 {(3)}^{2} + 3$

Step 2

Remove parentheses.

$5 {(3)}^{2} + 3$

Step 3

Simplify each term.

Raise $3$ to the power of $2$ .

$5 \cdot 9 + 3$

Multiply $5$ by $9$ .

$45 + 3$

Step 4

Add $45$ and $3$ .

$48$