Question

four times the square of z plus the sum of z squared and seven times z
(
a.) 4z^2+(z^2+7z)
(4z^2+z^2)+7z
4z^2+7z

(b.) 4z^2+(z^2+7z)
simplified

(c.) 4z^2+(z^2+7z)
(4z^2+z^2)+7z
5z^2+7z

(d.) 4z^2+(z^2+7z)
4z^2+z^2+7z
12z^2

Answer 1

so you have 4z^2+(z^2+7z) then simplify

Answer 2

so it's b? lol it's cause i'm not good at these. :p

Answer 3

well you have
4z^2+z^2 +7z
you can add 4z^2+z^2 = 5z^2
so you have
5z^2 + 7z

Answer 4

you can only combine like terms, so there is nothing else you can do