1)P(X)=x^2-x+1p (0)=0^2-0+10-0+11p (1)=1^2-1+11p (2)=2^2-2+14-2+15-233)p(Z)=z^3p (0)=0^3=0p(1)=1^3=1p(2)=2^3=8
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