# The expansion of(x+y-z)^2

1 answer

## Answers

Answer:x²+y²+z²+2xy-2yz-2zxStep-by-step explanation:{(x+y)-z}^2=(x+y)²-2(x+y)z+z²=x²+2xy+y²-2zx-2yz+z²=x²+y²+z²+2xy-2yz-2zx

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