4. C. 3p2q-7pq² + 14pq 10p²q + 30pq² - 25p2q³ Diketahui 28x²-18x+42 = 4ax²+6bx-7c. Nilai dari a, b, dan c berturut-turut adalah A. a=7, b=3, dan c = 6 B. a=7, b=-3, dan c=-6 C. a = 7, b = 3, dan c = -6 D. a=7, b=-3, dan c = 6 Bentuk penyederhanaan aljabar berikut tanta adalah

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