Write in Standard Form -2x-21+2x^2=-5

$- 2 x - 21 + 2 x^{2} = - 5$

Add $5$ to both sides of the equation.

$- 2 x - 21 + 2 x^{2} + 5 = 0$

Add $- 21$ and $5$ .

$- 2 x + 2 x^{2} - 16 = 0$

To write a polynomial in standard form, simplify and then arrange the terms in descending order.

$a x^{2} + b x + c = 0$

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

$2 x^{2} - 2 x - 16 = 0$