La raíz cuadrada principal de un número no negativo.aaes el numero no negativobbtal queb2=ab^2=a. Notación:a\sqrt{a}. la ecuacionx2=ax^2=acona>0a>0tiene dos raíces:x=±ax=\pm\sqrt{a}; la raíz cuadrada principal es la no negativa.
a≥0\sqrt{a}\ge0siempre (en la escuelaa≥0a\ge0)
(a)2=a(\sqrt{a})^2=a, a2=∣a∣\sqrt{a^2}=|a|
cuandoa=0a=0: x2=0⇒x=0x^2=0\Rightarrow x=0
Valor de la raíz cuadrada principal.
Factor under the radical
64\sqrt{64}
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