Question

Expand (x+2y−z)2 using identities .

Answer 1

Answer:

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Step-by-step explanation:

(x+2y-z)2

expand the squares

(x+2y-z) (x+2y-z)

multiply it with whole bracket

so the answer is

x2+4xy-2xz+4y2-4yz+z2

hope it helps