SOLUTION: The question asks to write the following term into a + ib form, where “i” is a complex number {{{ (sqrt( -1 )) }}}: {{{(1-i)(1+i)}}} I need to show steps but having troubl

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: The question asks to write the following term into a + ib form, where “i” is a complex number {{{ (sqrt( -1 )) }}}: {{{(1-i)(1+i)}}} I need to show steps but having troubl      Log On


   

Question 618690: The question asks to write the following term into a + ib form, where “i” is a
complex number +%28sqrt%28+-1++%29%29+:
%281-i%29%281%2Bi%29
I need to show steps but having trouble getting started. Can anyone help?
Thanks.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
%281-i%29%281%2Bi%29
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Multiply like any sum and difference.
%28a+-+b%29%28a+%2B+b%29+=+a%5E2+-+b%5E2
%281-i%29%281%2Bi%29+=+1%5E2+-+i%5E2+=+1+-%28-1%29+=+2
or 2 + 0i