## Precalculus (6th Edition) Blitzer

In the given function, to find the x-intercept $y=f\left( x \right)=0$. The equation then becomes: ${{x}^{3}}+2{{x}^{2}}-5x-6=0$. The x-intercepts can be found by using some technique that is currently unknown. But for the y-intercepts, put $x=0$; the equation becomes: $y=-6$. Thus, it is easy to find the y-intercepts even if the techniques for finding the x-intercepts are unknown.