Solve the equation by completing the square. x²+6x-4=0 
       
      
                
     
    
    
    
    1  answer:
            
              
Answer:
<u>x = √13 - 3 </u>
<u>x = -√13 - 3 </u>
Step-by-step explanation:
Given : 
Solving : 
x² + 6x + 9 - 9 - 4 = 0 [Adding  and subtracting  9] (x + 3)² - 13 = 0 [Group the square term together ] (x + 3)² -13 + 13 = 0 + 13 [Add 13 on both sides ] √(x + 3)² = √13 [Taking square root on both sides ] x + 3 - 3 = ±√13 - 3 [Subtract 3 from both sides ] x = ±√13 - 3 
Solutions : 
<u>x = √13 - 3 </u> <u>x = -√13 - 3 </u>  
                                
             
         	
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Please ask the question in English, if you are not able to, I believe you are in the wrong language section and suggest you try something else before you get your question taken down. 
        
             
        
        
        
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Answer is B) 4 pi
 
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Answer: 
3.60
Step-by-step explanation: 
1.44/0.4 is 3.60