a)
[tex] \sqrt{ \frac{4}{25} } = \frac{ \sqrt{4} }{ \sqrt{25} } = \frac{ \sqrt{2 {}^{2} } }{ \sqrt{5 {}^{2} } } = \frac{2}{5} [/tex]
[tex] \sqrt{ \frac{16}{9} } = \frac{ \sqrt{4 {}^{2} } }{ \sqrt{} 3 {}^{2} } = \frac{4}{3} [/tex]
[tex] \sqrt{ \frac{121}{289} } = \frac{ \sqrt{11 {}^{2} } }{ \sqrt{} 17 {}^{2} } = \frac{11}{17} [/tex]
[tex] \sqrt{ \frac{169}{324} } = \frac{ \sqrt{13 {}^{2} } }{ \sqrt{} 18 {}^{2} } = \frac{13}{18} [/tex]
b)
[tex] \sqrt{1.44} = \sqrt{ \frac{144}{100} } = \frac{ \sqrt{12 {}^{2} } }{ \sqrt{10 {}^{2} } } = \frac{12}{10} = 1.2[/tex]
de aici iti dai seama. faci singur/a!Cu placere
