Question

when there is a variable with a 0 as the exponent what does that mean?

Answer 1

it means your answer is 1

Answer 2

any variable with a 0 exponent becomes 1 except the number 0

Answer 3

the question is (x^5yz^0)(x^0y^3z^0)
and im supposed to symplify it.

Answer 4

so the variables with 0 exponent turn into 1.