Question

y=3x^3-3x find the zero and the state the multiplicity of multiple zeros

Answer 1

What exactly do you want us to do?

Answer 2

@Riddellikins find the zero and the state the multiplicity of multiple zeros

Answer 3

0 = 3x^3 - 3x
0 = 3x^2 - 3 (divide both sides by x)
3x^2 = 3
x^2 = 1
x = 1, -1

1 and -1 are the two zeros
I don't know what "the multiplicity of multiple zeros" means