Polynomialshard
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Consider the polynomial P(x)=x4+ax3+bx2+cx+dP(x) = x^4 + ax^3 + bx^2 + cx + d. If P(1)=1,P(i)=0,P(1)=1, P(i)=0, and P(1+i)=0P(1+i)=0, and the coefficients are real, what is P(x)P(x)?