Solve this:
Q.(ii) x x 2 + y 2 - z 2 + y - x 2 - y 2 + z 2 - z x 2 + y 2 - z 2



Dear Student,

To Factorize: x(x2+y2-z2)+y(-x2-y2+z2)-z(x2+y2-z2)taking -1 common from second term=x(x2+y2-z2)-y(x2+y2-z2)-z(x2+y2-z2)Now, taking (x2+y2-z2) as a common factor from each term= (x2+y2-z2)(x-y-z)  
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