Precalculus Examples

$f (x) = x^{3} - 6 x^{2} + 13 x + 42$

Step 1

Set $x^{3} - 6 x^{2} + 13 x + 42$ equal to $0$ .

$x^{3} - 6 x^{2} + 13 x + 42 = 0$

Step 2

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

$x \approx - 1.64322322$

Step 3