Simplify 6m^2n^2-3mn+4mn+13m^2n^2+9

$6 m^{2} n^{2} - 3 m n + 4 m n + 13 m^{2} n^{2} + 9$

Step 1

Add $6 m^{2} n^{2}$ and $13 m^{2} n^{2}$ .

$19 m^{2} n^{2} - 3 m n + 4 m n + 9$

Step 2

Add $- 3 m n$ and $4 m n$ .

$19 m^{2} n^{2} + 1 m n + 9$

Step 3

Multiply $m$ by $1$ .

$19 m^{2} n^{2} + m n + 9$