Prove that (x+1)(x+1-i)(x-1+i)(x-1-i)=x4+4 – InterviewSolution

1.	Prove that (x+1)(x+1-i)(x-1+i)(x-1-i)=x4+4
Answer» Prove that (x+1)(x+1-i)(x-1+i)(x-1-i)=x⁴+4

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