Polynomials/C/Computation/1/Exercise

Calculate in the polynomial ring ${}\mathbb {C} [X]$ the product

$((4+{\mathrm {i} })X^{2}-3X+9{\mathrm {i} })\cdot ((-3+7{\mathrm {i} })X^{2}+(2+2{\mathrm {i} })X-1+6{\mathrm {i} }).$

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