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08.02.2021 •
Mathematics
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Ответ:
Part A: 4a-3
Part B: (3a-5b) × (3a+5b)
Step-by-step explanation:
16a² - 24a + 9
(4a)² - 2(4a)(3) + 3²
(4a - 3)² = side²
side = 4a - 3
9a² - 25b²
(3a)² - (5b)²
(3a - 5b)(3a + 5b)