Răspuns:
[tex]6 \sqrt{2} = \sqrt{ {6}^{2} \times 2} = \sqrt{72} \\ 8 \sqrt{3} = \sqrt{ {8}^{2} \times 3} = \sqrt{192} \\ 9 \sqrt{2} = \sqrt{ {9}^{2} \times 2 } = \sqrt{162} \\ 5 \sqrt{6} = \sqrt{ {5}^{2} \times 6} = \sqrt{150} \\ 7 \sqrt{3 } = \sqrt{ {7}^{2} \times 3 } = \sqrt{147} \\ 4 \sqrt{7} - 10 \sqrt{3} - 12 \sqrt{5} = \sqrt{ {4}^{2} \times 7} - \sqrt{ {10}^{2} \times 3 } - \sqrt{ {12}^{2} \times 5} = \sqrt{112} - \sqrt{300} - \sqrt{720} [/tex]
