Question

calcule o valor a proximado das seguintes raizes
a)
$\sqrt{8}$

b)
$\sqrt{20}$
​

Answer 1

Oie, Td Bom?!

a)

$\sqrt{8} = \sqrt{2 {}^{2} \times 2} = \sqrt{2 {}^{2} } \sqrt{2} = 2 \sqrt{2} ≈2,82$

b)

$\sqrt{20} = \sqrt{2 {}^{2} \times 5} = \sqrt{2 {}^{2} } \sqrt{5} = 2 \sqrt{5} ≈4,47$

Att. Makaveli1996