SOLUTION: If {{{i=sqrt(-1)}}}
Prove:
{{{(x+1+i)(x+1-i)(x-1+i)(x-1-i)=x^2+4}}}
Algebra.Com
Question 876195: If
Prove:
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
Recognize how to associate terms in each trinomial factor to make use of difference of squares results.
Now keep going.
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