Algebra Examples

$7$ $12$ $3$ $14$ $17$ $20$ $5$ $3$ $17$ $4$ $13$ $2$ $15$ $9$ $15$ $18$ $16$ $9$ $1$ $6$

Reorder the numbers in ascending order.

$1, 2, 3, 3, 4, 5, 6, 7, 9, 9, 12, 13, 14, 15, 15, 16, 17, 17, 18, 20$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$