Question

One cut point of x^3+3x^2-4x-12>0?
a. 4
b. -6
c. -3
d. 3

Answer 1

\[x ^{3}+3x^{2}-4x-12>0\]
\[(x-2)(x+2)(x+3)>0\]
I think this is the way to find cut point. If then, cut point is -3

Answer 2

Thank you so much yukitou!

Answer 3

no problem