Simplify 300x+20+5x+10-40x^2

$300 x + 20 + 5 x + 10 - 40 x^{2}$

Add $300 x$ and $5 x$ .

$305 x + 20 + 10 - 40 x^{2}$

Simplify the expression.

Add $20$ and $10$ .

$305 x + 30 - 40 x^{2}$

Move $30$ .

$305 x - 40 x^{2} + 30$

Reorder $305 x$ and $- 40 x^{2}$ .

$- 40 x^{2} + 305 x + 30$