Factorise 1 + a2 + a3 + a
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Answer:a3 – a2 + a – 1
= a2 (a – 1) + 1(a – 1)
= (a – 1) (a2 + 2)
hope it helps u
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Answer:a³ – a² + a – 1
= a2 (a – 1) + 1(a – 1)
= (a – 1) (a2 + 2)
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