Tick (✓) the correct answer in each of the following: (a+1)(a−1)(a – InterviewSolution

1.	Tick (✓) the correct answer in each of the following: (a+1)(a−1)(a2+1)=? (a) (a4−2a2−1) (b) (a4−a2−1) (c) (a4−1) (d) (a4+1)
Answer» Tick $(✓)$ the correct answer in each of the following: $(a + 1) (a - 1) (a^{2} + 1) = ?$ (a) $(a^{4} - 2 a^{2} - 1)$ (b) $(a^{4} - a^{2} - 1)$ (c) $(a^{4} - 1)$ (d) $(a^{4} + 1)$

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