2x4 + 5x3 + 7x2 - x - 41 if x= - 2 - √3i
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8+15+14-x-41 given x=- 2 - √3i
=23+14-x-41.
=37-x-41. =37-2 - √3i-41. =35-√3i-41.
= -6- √3i. =-6-√3×√-1. =-6-√3×(-1) =6-√3
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