Precalculus Examples

$P (x) = x^{3} - 2 x^{2} + 5 x - 16$

Step 1

Set $x^{3} - 2 x^{2} + 5 x - 16$ equal to $0$ .

$x^{3} - 2 x^{2} + 5 x - 16 = 0$

Step 2

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

$x \approx 2.52698012$

Step 3