Q1 (10 points) Find all complex roots of the polynomial, and graph them in the complex plane. $z^7 - 8iz^4 + iz^3 + 8 = 0$. As a first step, find complex numbers $a, b \in \mathbb{C}$ so that you can factor the polynomial in the form $(z^4 - a)(z^3 - b)$.
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