Question

$(\frac{\frac{2}{5} }{\frac{3}{7} } -\frac{1}{3} )^{2}$ ajudem pfv

Answer 1

Resposta:

Explicação passo a passo:

$\displaystyle (\frac{\frac{2}{5} }{\frac{3}{7} } -\frac{1}{3} )^{2}=({\frac{2}{5} }\times{\frac{7}{3} } -\frac{1}{3} )^{2}=(\frac{14}{15} -\frac{1}{3} )^{2}=(\frac{14-5}{15} )^2=(\frac{9\div3}{15\div3} )^2=(\frac{3}{5} )^2=\frac{3^2}{5^2} \\\\=\frac{9}{25}$

Answer 2

Resposta:

$\frac{9}{25}$

Explicação passo-a-passo:

$( \frac{2}{ \frac{5}{ \frac{3}{7} } } - \frac{1}{3} ) {}^{2} = ( \frac{2}{5} \times \frac{7}{3} - \frac{1}{3} ) {}^{2} = ( \frac{14}{15} - \frac{1}{3} ) {}^{2} = ( \frac{9}{15} ) {}^{2} = \frac{81}{225} = \div \frac{9}{9 } = \frac{9}{25}$