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Step-by-step explanation:
= {a2 -1 }{a2+1}
= {a4-1}
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Answered by
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Answer:
Identity a² - b² = (a+b) (a-b)
Step-by-step explanation:
- (a + 1)(a - 1)(a² + 1)
- = (a²- 1)(a² + 1)
- = (a)² - (1)²
- = a² - 1
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