Question

a) √4/25 , √16/9 , √ 121/289 , √169/324;
model la a) √9/36 =√9/√36 =√3²/√6² =3/6totul la a 3
b) √1,44 , √0,0064 , √9,61
model la b) √0,16 = √16/100 = √16/√100 = √4²/√10² = 4/10 = 0,4
Ajutor va rog dau coroana

Answer 1

a)

$\sqrt{ \frac{4}{25} } = \frac{ \sqrt{4} }{ \sqrt{25} } = \frac{ \sqrt{2 {}^{2} } }{ \sqrt{5 {}^{2} } } = \frac{2}{5}$

$\sqrt{ \frac{16}{9} } = \frac{ \sqrt{4 {}^{2} } }{ \sqrt{} 3 {}^{2} } = \frac{4}{3}$

$\sqrt{ \frac{121}{289} } = \frac{ \sqrt{11 {}^{2} } }{ \sqrt{} 17 {}^{2} } = \frac{11}{17}$

$\sqrt{ \frac{169}{324} } = \frac{ \sqrt{13 {}^{2} } }{ \sqrt{} 18 {}^{2} } = \frac{13}{18}$

b)

$\sqrt{1.44} = \sqrt{ \frac{144}{100} } = \frac{ \sqrt{12 {}^{2} } }{ \sqrt{10 {}^{2} } } = \frac{12}{10} = 1.2$

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