Question

Calcule o valor das expresses numéricas!! Me ajudemm​

Answer 1

Resposta:

Explicação passo-a-passo:

($(5-\frac{3}{2})^{-2}=(\frac{2.5-3}{2})^{-2}=(\frac{7}{2})^{-2}=(\frac{2}{7})^{2}=\frac{4}{49}$

Answer 2

Explicação passo-a-passo:

$\boxed{\begin{array}{Ir}(5-\frac{3}{2})^{-2}=(\frac{5.2-3}{2})^{-2}=(\frac{10-3}{2})^{-2}=(\frac{7}{2})^{-2}=(\frac{2}{7})^2=\frac{2^2}{7^2}=\frac{4}{49}\end{array}}$

Propriedades aplicadas:

$\boxed{\begin{array}{Ir}\frac{a}{b}\pm\frac{c}{d}=\frac{a.d\pm\:c.b}{b.d}\end{array}}$

$\boxed{\begin{array}{Ir}(\frac{a}{b})^{-n}=(\frac{b}{a})^n\end{array}}$

Espero ter ajudado bastante!)