1. 

   math_celebrity Administrator Staff Member

   if i = square root of -1 what is the sum (7 + 3i) + (-8 + 9i)
   
   We group like terms, and we get:
   7 - 8 + (3 + 9)i
   
   Simplifying, we get:
   -1 + 12i

    

   math_celebrity, Dec 8, 2019

   #1
   
   

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