Olá vamos resolver essas conta de raiz quadrada
[tex] \sqrt{128} \\ \\ \sqrt{ {2}^{7} } \\ \\ \sqrt{ {2}^{6 + 1} } \\ \\ \sqrt{ {2}^{6} \times {2}^{1} } \\ \\ \sqrt{ {2}^{6} \times 2 } \\ \\ \sqrt{ {2}^{6} \sqrt{2} } \\ \\ {2}^{3} \sqrt{2} \\ \\ 2 \times 2 \times 2 = 8 \\ \\ 8 \sqrt{2} [/tex]
[tex]2 \sqrt{98} \\ \\ 2 \sqrt{49 \times 2} \\ \\ 2 \sqrt{ {7}^{2} \times 2 } \\ \\ 2 \sqrt{ {7}^{2} } \sqrt{2} \\ \\ \sqrt[2]{ {7}^{2} } \\ \\ 7 \\ \\ 2 \times 7 \sqrt{2} \\ \\ 14 \sqrt{2} \\ \\ [/tex]
[tex]3 \sqrt{72} \\ \\ 3 \sqrt{36 \times 2} \\ \\ 3 \sqrt{ {6}^{2} \times 2 } \\ \\ 3 \sqrt{ {6}^{2} } \sqrt{2} \\ \\ \sqrt[2]{ {6}^{2} } \\ \\ 6 \\ \\ 3 \times 6 \sqrt{2} \\ \\ 18 \sqrt{2} [/tex]
