answer 1 plzz
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1/2(x+y+z)(x^2+y^2-2xy+y^2+z^2-2yz+z^2+x^2-2zx)
1/2(x+y+z)2(x^2+y^2+z^2-xy-yz-zx)
canel 1/2 from 2
(x+y+z)(x^2+y^2+z^×-xy-yz-zx) it is also formula for x^3+y^3+z^3-3xyz
1/2(x+y+z)2(x^2+y^2+z^2-xy-yz-zx)
canel 1/2 from 2
(x+y+z)(x^2+y^2+z^×-xy-yz-zx) it is also formula for x^3+y^3+z^3-3xyz
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