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2. 27-(3x60) = 27-180 = -153
3. Jika x * y = x³ - 3xy,
9*3 = 9³ - 3.9.3 = 729 - 81 = 648
4. 9³+5³-3³ = 729 + 125 - 27 = 827
5. Jika m= -2, n=8 dan k=9
3n²-3m²k = 3.8² - 3.(-2)².9
= 3.64 - 3.4.9
= 192 - 108
= 84
semoga membantu :)
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