Question

plzzzz telll me. plzzzzz​

Answer 1

Answer:

Hopefully you did try to solve it yourself, if you couldn't figure it out here is the answer:

$3x^2 -y^2+2^2-2xy-4xz\\=3x^2 -y^2+4-2xy-4xz$

It is already simplified (except for the 2 squared).