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(2-i)(2/5 + 1/5i)

 Apr 26, 2017
 #1
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+2

(2 - i)(2/5 + 1/5i) =     factor 1/5 from the second term

 

(1/5) (2 - i)  (2 + i)  =

 

(1/5)  (4  - i^2)  =

 

(1/5)  (  4 -  -1)  =

 

(1/5) (5)   =  

 

1

 

 

cool cool cool

 Apr 26, 2017

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