[" 7.Show that "x^(2)+xy+y^(2),z^(2)+zx+...

[" 7.Show that "x^(2)+xy+y^(2),z^(2)+zx+x^(2)" and "y^(2)+yz+z^(2)" are consecutive terms of an AP,it "],[" and zare in A.P."],[qquad [NCERT" EXEMR "]

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