Precalculus Examples

$f (x) = - 2 x^{4} + 4 x^{3} + 3 x^{2} + 18$

Step 1

Set $- 2 x^{4} + 4 x^{3} + 3 x^{2} + 18$ equal to $0$ .

$- 2 x^{4} + 4 x^{3} + 3 x^{2} + 18 = 0$

Step 2

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx - 1.52443742, 2.89120917$

Step 3