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-12k²-9kl²-18k²l-8kl²
-12k²-17kl²-18k²l
B. 5(3m³ - 5m² + m) -2(m³ + 4m² - 9m)
15m³-25m²+5m-2m³-8m²+18m
13m³-33m²+23m
semoga saja benar dan bisa membantu :)