Explicație pas cu pas:
[tex] \sqrt{2} ( \sqrt{32} + \sqrt{50} - \sqrt{98} ) - 3 \sqrt{3} \times \sqrt{12} = \\ \sqrt{2} (4 \sqrt{2} + 5 \sqrt{2} - 7 \sqrt{2} ) - 3 \sqrt{3} \times 2 \sqrt{3} = \\ \sqrt{2 } \times 2 \sqrt{2} - 3 \sqrt{3} \times 2 \sqrt{3} = \\ 2 \times \sqrt{2 } \times \sqrt{2} - 3 \times 2 \times \sqrt{3} \times \sqrt{3} = \\ 4 - 6 \times 3 = \\ 4 - 18 = - 14[/tex]
