The solution to 3x2 – 12x + 24 = 0 is .

Use the quadratic formula on 3x² − 12x + 24 = 0. The discriminant is (−12)² − 4(3)(24) = 144 − 288 = −144, so the roots are [12 ± √(−144)]/6 = (12 ± 12i)/6 = 2 ± 2i. Therefore, the solutions are 2 + 2i or 2 − 2i, choice B.

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