Question 118255
5/(1+i)  write expression as complex number in standard form
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Multiply numerator and denominator by 1-i to get:

5(1-i)/[(1+i)(1-i)]

= [5-5i]/(1-i^2)

= [5-5i]/2

= (5/2)-(5/2)i
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Cheers,
Stan H.