x^2yz+xy^2 z +xyz^2 x^2yz = x×x×y×z xy^2z = x×y×y×z xyz^2= x×y×z×z Common factor of x^2yz , xy^2z and xyz^2are x, y, z i.e. xyz Now, x^2yz+xy^2z+xyz^2= xyz(x+y+z)
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