Explanation

Numerically, ∛3 ≈ 1.442 and ∛9 ≈ 2.080, so x ≈ 3 − 1.442 − 2.080 ≈ −0.522. Then x(x − 3)(x − 6) ≈ (−0.522)(−3.522)(−6.522) ≈ −12.0. Among the spaced options only −12 fits, and the exact expansion with t = ∛3 (t³ = 3) confirms the product is exactly −12, option A.