Precalculus Examples

$f (x) = 4 x^{2} + 8 x^{3} + 2$

Step 1

Set $4 x^{2} + 8 x^{3} + 2$ equal to $0$ .

$4 x^{2} + 8 x^{3} + 2 = 0$

Step 2

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

$x \approx - 0.84781038$

Step 3