Precalculus Examples

$f (x) = 8 x^{4} + 2 x^{3} + 4 x - 5$

Step 1

Set $8 x^{4} + 2 x^{3} + 4 x - 5$ equal to $0$ .

$8 x^{4} + 2 x^{3} + 4 x - 5 = 0$

Step 2

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

$x \approx - 1.11094686, 0.67645387$

Step 3