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4a² + 12a + 9
4a² + 6a + 6a + 9
2a(2a + 3) + 3(2a + 3)
(2a + 3)(2a + 3)
√n = 2a + 3
Jawaban-Nya yang a. 2a + 3
81a² - 16b²
81a² + 36ab - 36ab - 16b²
9a(9a + 4b) - 4b(9a + 4b)
(9a - 4b)(9a + 4b)
Jawaban-Nya yang c. (9a - 4b)(9a + 4b)