SOLUTION: write and expression for the sum of a complex number a+bi and its complex conjugate.___________ ______ Is this sum a real number, a complex number or both? i tried (a+bi)+(a-bi)

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: write and expression for the sum of a complex number a+bi and its complex conjugate.___________ ______ Is this sum a real number, a complex number or both? i tried (a+bi)+(a-bi)      Log On


   

Question 674808: write and expression for the sum of a complex number a+bi and its complex conjugate.__________________ Is this sum a real number, a complex number or both?
i tried (a+bi)+(a-bi)= a+a - (b-b)i and i dont know what to do next
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
(a+bi)+(a-bi)
remove the parentheses
a + bi + a - bi
group like terms
a + a + bi - bi
a+a
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