Answer: 1 real and 2 complex.
Explanation:
A cubic polynomial is written as:
a*x^3 + b*x^2 + c*x + d
And the zeros are such that:
a*x^3 + b*x^2 + c*x + d = 0
As the degree of the polynomial is 3, then we have 3 solutions (where some of them may be equal)
Now, an easy way to see the real and complex zeros of a polynomial is:
If after a change in curvature, the line touches the x-axis : that is a real zero
if it does not, then there we have a complex zero.
Here we can see two lines that do not touch the x-axis and one line that does touch the x-axis.
Then we have 2 complex zeros and one real zero.