1. 2a + 4b + 3a = 2a + 3a + 4b
= (2+3)a + 4b
= 5a + 4b
2. 16a² - 24ab + 9b² = (4a - 3b)(4a - 3b)
= (4a - 3b)²
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1. 2a + 4b + 3a = 2a + 3a + 4b
= (2+3)a + 4b
= 5a + 4b
2. 16a² - 24ab + 9b² = (4a - 3b)(4a - 3b)
= (4a - 3b)²
Semoga membantu:D