Question: i stuck in this question please solve (b) (i) Given that -2 + 5 is a complex root of the cubic polynomial r + 13r

i stuck in this question please solve

(b) (i) Given that -2 + 5 is a complex root of the cubic polynomial r + 13r - 116, determine the other two roots (without using a calculator). (ii) Hence, (and without using a calculator) determine 12r + 74 dr. + + 13r - 116 (Hint: Use the result of part (a) to write r + 13r - 116 = (x - a)(r' + br + c) for some a, b and c, and use partial fractions.)

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