the zeros are 77, 1 + i

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There has to be another complex zero to balance the given one. This zero is 1-i. The factors of the polynomial are (x-7)²(x-1+i)(x-1-i)=(x²-14x+49)(x²-2x+1+1)=





x⁴-16x³+79x²-126x+98. This is the lowest degree polynomial with the given factors. Other polynomials of the same degree can be found by multiplying this one by a constant. Higher degree polynomials can be found by multiplying by another factor of the type x+c where c is a constant.

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