Answers edited by Harshit Tiwari

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• How did life begin according to science?
  
• What are the roots of the equation #x^2 - 5x - 36 = 0#?
  
• How do you multiply #(8a^4b^3)/(3c) div (a^7b^2)/(9c)#?
  
• What is relative density??
  
• How do you solve #0= 4x ^ { 2} + 8x + 1#?
  
• How do you solve # x^2 - 6x =13# by completing the square?
  
• How do I find the perimeter of a square from the area of the square?
  
• How do you solve #(x-1)/3 -( x-1) /2 = 6#?