a(a-2)-b(b-2) factories
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Step-by-step explanation:
a(a-2) - b(b-2)
= a² - 2a - b² + 2b
= a²-b² - 2a + 2b
= (a+b) (a-b) - 2(a-b)
= (a-b) (a+b-2)
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Step-by-step explanation:
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