Question

a + 1/a ao quadrado para a = 1/5​

Answer 1

Resposta:

$\boxed{\dfrac{26}{5}}$

Explicação passo-a-passo:

$se\; a= \dfrac{1}{5}\\ent\~ao:\\\\ a+\dfrac{1}{a}=\\\\\dfrac{1}{5}+\dfrac{1}{\dfrac{1}{5}}\\\\\dfrac{1}{5}+1\div\dfrac{1}{5}=\\\\\dfrac{1}{5}+1\times \dfrac{5}{1}=\\\\\dfrac{1}{5}+5=\\\\\dfrac{1}{5}+\dfrac{25}{5}=\boxed{\dfrac{26}{5}}$