Question

-z^2+13z^2 -5z+7z^3 -15z

Answer 1

Answer:

Here a graph

Hope it will be helpful

Answer 2

Answer:

7z^3+12z^2-20z

Step-by-step explanation:

group like terms:

7z^3-z^2+13z^2-5z-15z

add similar elements:

-z^2+13z^2=12z^2

=7z^3+12z^2-5z-15z

add similar elements:

-z^2+13z^2=12z^2

=7z^3+12z^2-5z-15z

add similar elements:

-5z-15z=-20z

therefore the answer is 7z^3+12z^2-20z