-2z² + 4z + 2z² = ?
Can someone please explain how to do this?
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4z

Step-by-step explanation:

-2z² + 4z + 2z²

Combine like terms

-2z^2  + 2z^2   +4z

0z^2 +4z

4z

please check the question ...

the 2z's cancel

you are left with 4z=

check if the question was can you factor and that the -2x^2 is not -2z^3

Step-by-step explanation:

step-by-step explanation:

if you meant, "on the way from (3, 2) to (3, 14):

x does not change; y increases by 12.

ensure that you have copied down this problem correctly.   .