(a – 1) (a² - 2a + 1) = ,
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Answer:
(a - 1)³
Step-by-step explanation:
(a - 1) (a² - 2a + 1)
= (a × a² + a × -2a + a × 1) + (-1 × a² -1 × -2a -1 × 1)
= (a³ - 2a² + a) + (-a² + 2a - 1)
= a³ - 2a² + a - a² + 2a - 1
= a³ - 3a² + 3a - 1
= (a - 1)³ { ∵ a³ - 3a²b + 3ab² - b³ = (a - b)³ }
Hope that helps you...☺
Answered by
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Answer:
answer is (a-1)^2 is the correctly anser
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