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

User Chris Sears
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Yes\ -\sqrt9\ is\ real\ number\\\\-\sqrt9=-3\ is\ integer\ number\\\\-√(a)\in\mathbb{R}\ for\ any\ a\geq0
User Whadar
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