Write in Standard Form -8x+3x^2=-18

$- 8 x + 3 x^{2} = - 18$

Add $18$ to both sides of the equation.

$- 8 x + 3 x^{2} + 18 = 0$

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

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

Reorder $- 8 x$ and $3 x^{2}$ .

$3 x^{2} - 8 x + 18 = 0$