What’s the answer? i don’t understand how to do this

What is the multiple zero and multiplicity of f(x) = (x ? 3)(x ? 3)(x + 5)? multiple zero is 3; multiplicity is 2 multiple zero is 5; multiplicity is 1 multiple zero is ? 5; multiplicity is 1 multiple zero is ? 3; multiplicity is 2

Combine like terms to make a simpler expression 3z+z

Which of the following can be used to explain a statement in a geometric proof?