If (20)² is subtracted from the square of a number, the answer so obtained is 4321. What is the number?

• x^2=4321+400=4721
  *****************
  69*69=4761
  may be x=69(approximately)
  
• 10 years agoHelpfull: Yes(6) No(0)
• x^2=4321+400=4721
  *****************
  69*69=4761
  may be x=69(approximately)
  
• 10 years agoHelpfull: Yes(1) No(1)
• X^2-400=4321
  x^2=4721
  x=61
• 9 years agoHelpfull: Yes(1) No(3)
• x2-400=4321;
  x=68.7
• 10 years agoHelpfull: Yes(0) No(0)
• suppose x^2-400=4321
  x^2=4761
  x=69.700
  
  
• 9 years agoHelpfull: Yes(0) No(1)
• (20)^2-(X)^2=4321
  (x)^2=4321+400
  x^2=4721
  x=(69*69)^(1/2)
  x=69
• 9 years agoHelpfull: Yes(0) No(1)
• x-400=4321
  x=4721
• 6 years agoHelpfull: Yes(0) No(0)