factorise:x2+y2+z2-2xy+2xz-2yz
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x2+y2+z2-2xy+2xz-2yz
=x^2+y^2+z^2-2xy+4-2yz
=x^2+y^2+z^2-2xy+4-2yz
=x^2+y^2+z^2-2xy+4-2yz
=x^2+y^2+z^2-2xy+4-2yz
srishti103:
thanks
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