Răspuns:
[tex]a = 4 \sqrt{2} \times ( - 3 \sqrt{2} ) + 25 \\ a = - 12 \sqrt{4} + 25 = - 24 + 25 \\ a = 1 \\ b = 8 \sqrt{27} \div (2 \sqrt{3} ) - 13 \\ b = 4 \sqrt{9} - 13 = 12 - 13 = - 1 \\ a + b = 1 + ( - 1) = 1 - 1 = 0[/tex]
