Which is a root of f(x)=0 with a multiplicity of 2?

Question

Which is a root of
`f(x)=0` with a multiplicity of 2?

Answer 1

3

Explanation:

The zero at the point x=3 is a result of a factor of even degree, because the function does not change sign as the value of (x -3) changes sign. Since a cubic only has 3 factors, the even degree must be 2. That is, (x -3)² is a factor of f(x) and the root at x=3 has multiplicity 2.