<PRE><B>Question 665967</B>
{{{(x - 5)(x -(-5))(x - (1+i))(x - (1-i))}}}

{{{(x - 5)(x +5)(x - 1-i)(x -1+i)}}}

{{{(x^2 -5x +5x-25)(x^2-x+xi-1x+1-i-ix+i-i^2)}}}

{{{(x^2 -25)(x^2-2x+1-(-1))}}}

{{{(x^2 -25)(x^2-2x+1+1)}}}

{{{(x^2 -25)(x^2-2x+2)}}}

{{{x^4-2x^3+2x^2-25x^2+50x-50}}}

{{{x^4-2x^3-23x^2+50x-50}}}



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