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2. 12a² - 15ab + 8ab - 10b² = 12a² - 7ab - 10b²
3. yg no.3 ga paham soalnya :D
5p2 – 7p + 8 – p2 + 3p – 10 = 5p2 – p2 – 7p + 3p + 8 – 10 = 4p2 – 4p – 2
2. Jawaban: c
5(3x – 1) – 12x + 9 = 15x – 5 – 12x + 9 = (15 – 12)x – 5 + 9 = 3x + 4
3. Jawaban: d
8(3x + 6y) + 3(2x – 6y) = 24x + 48y + 6x – 18y = 30x + 30y