Resposta:
[tex]\frac{\left(\frac{27}{9}-2^{\circ \:}\right)\cdot \:9}{\sqrt{9}}\\\\\frac{9\left(\frac{27}{9}-2^{\circ \:}\right)}{9^{\frac{1}{2}}}\\\\9^{-\frac{1}{2}+1}\left(\frac{27}{9}-2^{\circ \:}\right)\\\\9^{\frac{1}{2}}\left(\frac{27}{9}-2^{\circ \:}\right)\\\\\sqrt{9}\left(\frac{27}{9}-2^{\circ \:}\right)\\\\\sqrt{9}\left(-2^{\circ \:}+3\right)\\\\3\left(-2^{\circ \:}+3\right)[/tex]
Resposta: 9
Explicação passo a passo:
(27÷9-2°)×9÷√9
(27÷9-1)x9÷√9
(2)x9÷√9
18÷√9
√9=3
18÷3= 6