Explicație pas cu pas:
[tex] \sqrt{2} \times \sqrt{32} = \sqrt{64} = \sqrt{2 ^ {6} } = 8 \\ \sqrt{63} \times ( - \sqrt{7}) = -\sqrt{ 441} = -21 \\ \sqrt{3 \frac{1}{3} } \times \sqrt{1.2} = \sqrt{ \frac{3 \times 3 + 1}{3} \times } \sqrt{ \frac{12}{10} } \\ = \sqrt{ \frac{10}{3} } \times \sqrt{ \frac{6}{5} } = \sqrt{ \frac{60}{15} } = \sqrt{4} = 2 \\ [/tex]
[tex] - \sqrt{338} \div \sqrt{98} = - 13 \sqrt{2} \div 7 \sqrt{2} [/tex]
