plźz send answer fatly
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saisha1111:
fast spelling wrong
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27x^3+8y^3+z^3-18xyz
Using the identity
x^3+y^3+z^3-3xyz=(x+y+z)(x^2+y^2+z^2-xy-yz-zx)
(3x+2y+z)(9x^2+4y^2+z^2-6xy-2yz-3xz)
Using the identity
x^3+y^3+z^3-3xyz=(x+y+z)(x^2+y^2+z^2-xy-yz-zx)
(3x+2y+z)(9x^2+4y^2+z^2-6xy-2yz-3xz)
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