kareena2410 kareena2410

23-08-2019
Mathematics

contestada

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

Respuesta :

aamaruf aamaruf

23-08-2019

Answer:

x²+y²+z²+2xy-2yz-2zx

Step-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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