Precalculus Examples

$f (x) = - 2 x^{3} - 3 x^{2} + 4 x + 7$

Step 1

Set $- 2 x^{3} - 3 x^{2} + 4 x + 7$ equal to $0$ .

$- 2 x^{3} - 3 x^{2} + 4 x + 7 = 0$

Step 2

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

$x \approx 1.47248411$

Step 3