1:
a)
[tex] (\sqrt{100} + \sqrt{64} ) \div \sqrt{9} = \\ (10 + 8) \div 3 = \\ 18 \div 3 = 6[/tex]
b)
[tex] \sqrt{49} \times ( \sqrt{4} - \sqrt{196} ) = \\ 7 \times (2 - 14) = \\ 7 \times ( - 12) = - 84[/tex]
c)
[tex] \sqrt{144} \div ( \sqrt{1} + \sqrt{121} ) = \\ 12 \div (1 + 11) = \\ 12 \div 12 = 1[/tex]
2:
E={25;36}
card.E= 10
3:
[tex]( \sqrt{ \frac{9}{64} } + \sqrt{ \frac{25}{16} } - \sqrt{ \frac{121}{100} } ) \div \sqrt{1.2 \div 0.8(3)} \\ ( \frac{3}{8} + \frac{5}{4} - \frac{11}{10} ) \div \sqrt{ \frac{6}{5} \div \frac{12}{5} } = \\ \frac{21}{40} \div \sqrt{ 2 } = \\ \frac{21 \sqrt{2} }{40} [/tex]
