Simplify (4x+12)+(2x^2-6x+5)

$(4 x + 12) + (2 x^{2} - 6 x + 5)$

Remove parentheses.

$4 x + 12 + 2 x^{2} - 6 x + 5$

Subtract $6 x$ from $4 x$ .

$- 2 x + 12 + 2 x^{2} + 5$

Simplify the expression.

Add $12$ and $5$ .

$- 2 x + 2 x^{2} + 17$

Reorder $- 2 x$ and $2 x^{2}$ .

$2 x^{2} - 2 x + 17$