Seudónimo Seudónimo
  • 02-08-2016
  • Mathematics
contestada

Please help!
√121=?
Explain your answer.

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Аноним Аноним
  • 02-08-2016
Since 11×11=12111×11=121, the square root of 121 is 11. =) 
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missyvee
missyvee missyvee
  • 02-08-2016
[tex] \sqrt{121} = +11 and -11  [/tex]
If you take the square root of something, you are looking for what number, when squared, will give you the number within the square root. 
Ex: [tex] \sqrt{9} = 3[/tex]
[tex] 3^{2} = 9 [/tex]

so with [tex] \sqrt{121} [/tex] both [tex] -11^{2} [/tex] and [tex] +11^{2} [/tex] with give you 121
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