Raiz quadrada por fatoração
[tex]\begin{array}{r|l}\sf128&\sf2\\\sf64&\sf2\\\sf32&\sf2\\\sf16&\sf2\\\sf8&\sf2\\\sf4&\sf2\\\sf2&\sf2\\\sf1\end{array}[/tex]
[tex] \mathsf{ \sqrt{128}=\sqrt{2^2\cdot2^2\cdot2^2\cdot2}} [/tex]
[tex] \mathsf{\sqrt{128}=2\cdot2\cdot2\sqrt2 } [/tex]
[tex]\boxed{\boxed{\mathsf{\sqrt{128}=8\sqrt2 }}}[/tex]
