equation/imaginary number

[har]

Hi Im working on an equation with imaginary numbers.
Evaulate x^2-2x+2 for x=1+i

 

[Deleted member 4993]

Hi Im working on an equation with imaginary numbers.
Evaulate x^2-2x+2 for x=1+i

This is a simple evaluation problem - plug-n-chug

x[sup:37xghwip]2[/sup:37xghwip] - 2x + 2

= (1+i)[sup:37xghwip]2[/sup:37xghwip] - 2(1+i) + 2

Now expand and continue....

 

[har]

HI thanks
I end up with the answer 4+2i but the book has a different answer

 

[Deleted member 4993]

The answer should be 0.

Please show your work.

 

[har]

Thanks I found my mistake