Question

expand. (x+2y-z) whole square​

Answer 1

Answer:

x^2+4y^2-z^2

Step-by-step explanation:

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Answer 2

Answer:

(x-2y+z)^2

= x^2 + 4y^2 + z^2 - 4xy - 4yz + 2xz

Hope it helps...