multiply and simplify

(4-z)z

=4z-zsquare?

can you please let me know if I am correct

Yes, 4 z - z^2

yay! Thank you

To multiply and simplify (4-z)z, you need to distribute the z to both terms inside the parentheses:

(4-z)z = 4z - z^2

So, your answer is correct! Well done.