Question

Resolva as raízes :
a) √1,69 =
b) √0,81 =​

Answer 1

Explicação passo-a-passo:

a)

$\sf \sqrt{1,69}=\sqrt{\dfrac{169}{100}}=\dfrac{\sqrt{169}}{\sqrt{100}}=\dfrac{13}{10}=\red{1,3}$

b)

$\sf \sqrt{0,81}=\sqrt{\dfrac{81}{100}}=\dfrac{\sqrt{81}}{\sqrt{100}}=\dfrac{9}{10}=\red{0,9}$