michellewilliam michellewilliam
  • 01-06-2014
  • Mathematics
Answered

determine whether each expression is meaningful as  a real number  yes or no?   -√9

Answer :

Аноним Аноним
  • 06-07-2014
[tex]Yes\ -\sqrt9\ is\ real\ number\\\\-\sqrt9=-3\ is\ integer\ number\\\\-\sqrt{a}\in\mathbb{R}\ for\ any\ a\geq0[/tex]
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