Answers edited by Sanjay VN

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• Question #e198c
  
• Question #a59cd
  
• How do you solve #x^2-12x+5=0# by completing the square?
  
• (complexe numbers) Show that? Thank you!
  
• Wire of length 20m is divided into two pieces and the pieces are bent into a square and a circle. How should this be done in order to minimize the sum of their areas? Round your answer to the nearest hundredth?
  
• Find the cube root of complex number ? Z=-√2 + i√2