Question

Find (- x + 2y + z)​

Answer 1

(X+2y-z)²

=(X+2y-z)(X+2y-z)

=X(X+2y-z)+2y(X+2y-z)+z(X+2y-z)

=x²+2xy-xz+2xy+4y²-2yz+xz+2yz-z²

=x²+4y²-z²+4xy..

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Answer 2

Answer:

Step-by-step explanation:

(-x+2y+z)

=2y+z-x

remember there should always be positive first