Question

by middle term splitting-(x+y+z)^2​

Answer 1

${(x + y + z)}^{2} \\ = {x}^{2} + {y}^{2} + {z}^{2} + 2xy + 2yz + 2zx$

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Answer 2

Explanation:

=x^2+ y^2+z^2+2 (xy+yz+xz )