Answer:
Step-by-step explanation:
Brackets in mathematics are a little like periods in grammar.
They tell you exactly what you need to do.
In the question you have listed
3z^3 means that only the z is raised to the third power.
(3z)^3 means both the 3 and the z are raised to the third power. 3^3 * z^3 =
27 z^3 This is a valuable question to know the answer to.
