Answer:
(-1,2) , (2,-1), (2,-1) , (-2,1)
Step-by-step explanation:
-5 x 0.2=-1
5 x 0.2=1
10 x 0.2= 2
-10x 0.2=-2
 
        
             
        
        
        
Asked and answered elsewhere.
brainly.com/question/10192511Knowing that 1+2i is a root, you also know that 1-2i is a root, so one quadratic factor is
   (x -1)² -(2i)² = x^2 -2x +5
Long division of the given polynomial by this quadratic gives a quotient of 
  x² +9
which has roots ±3i.
Then all 
the roots are {-3i, 3i, 1-2i, 1+2i}.
 
        
        
        
I believe that the answer is C. x - 114 : y - 34
        
             
        
        
        
The answer is 2500 milligrams
        
             
        
        
        
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