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Let zj,j=1,2,3,..,7 be the roots of the equation z7=(1−z)7. Then the value of 7∑j=1Re(zj), where Re(z) denotes the real part of z, is

Answer» Let zj,j=1,2,3,..,7 be the roots of the equation z7=(1z)7. Then the value of 7j=1Re(zj), where Re(z) denotes the real part of z, is


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