Question 2 • [INMT3] Integrated Math 3 Sem 1 (26-27)
Distribute the minus sign across the second parentheses: 0.4k³ − 2.5k − 2.4k³ − 3k² + 1.2k. Combine like terms: (0.4 − 2.4)k³ = −2k³, the k² term is −3k², and (−2.5 + 1.2)k = −1.3k. This matches choice C, −2k³ − 3k² − 1.3k.
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