Question

me ajudem porfavo é URGENTE





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Answer 1

Resposta:

a) $\sqrt{9}=3, \sqrt{4}=2, logo, \sqrt\frac{9}{4}=\frac{3}{2}$

b) $\sqrt{1}=1,\sqrt{64}=8, logo, \sqrt\frac{1}{64}=\frac{1}{8}$

c) $\sqrt{25}=5, \sqrt{49}=7, logo, \sqrt\frac{25}{49}=\frac{5}{7}$

d) $\sqrt{64} = 8, \sqrt{9}=3, logo, \sqrt\frac{64}{9}=\frac{8}{3}$

e) $\sqrt{36}=6, \sqrt{225}=15, logo, \sqrt\frac{36}{225}=\frac{6}{15}$

f) O número misto deve ser expresso com fração imprópria:

$\sqrt{1}\frac{7}{9}=(1.9+7)/9\\ \sqrt\frac{16}{9}\\\sqrt{16}=4, \sqrt{9}=3, logo, \sqrt\frac{16}{9}=\frac{4}{3}$

g) $\sqrt{1-\frac{5}{9}}=\sqrt\frac{1.-5+9}{-9}=\sqrt\frac{4}{-9}\\\sqrt{4}=2, \sqrt{-9}=-3, logo, \sqrt{\frac{4}{-9}}=\frac{2}{-3}$

h)$\sqrt{2+\frac{14}{25}}=\sqrt\frac{2.25+14}{25}}=\sqrt\frac{64}{25} \\\sqrt{64}=8, \sqrt{25}=5, logo, \sqrt\frac{64}{25}=\frac{8}{5}$

Espero que tenha ajudado