sederhanakan bentuk akar tersebut √72-√18+√2

[tex] = \sqrt{72} - \sqrt{18} + \sqrt{2} \\ = \sqrt{36 \times 2} - \sqrt{9 \times 2} + \sqrt{2} \\ = 6 \sqrt{2} - 3 \sqrt{2} + \sqrt{2} \\ = 4 \sqrt{2} [/tex]