Hasil dari akar18+akar50+akar72=

[tex] = \sqrt{18} + \sqrt{50} + \sqrt{72} \\ = \sqrt{9 \times 2} + \sqrt{25 \times 2} + \sqrt{36 \times 2} \\ = 3 \sqrt{2} + 5 \sqrt{2} + 6 \sqrt{2} \\ = 14 \sqrt{2} [/tex]