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Factorise 9(a-2)^2 -16(a+2)^2 |
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Answer» Step-by-step explanation: 9(a - 2)² - 16(a + 2)² 9( a² - 4a + 4) - 16( a² + 4a + 4) 9a² - 36a + 36 - 16a² - 64A - 64 - 7a² - 100a - 28 |
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