Step-by-step explanation:
[tex] = \sqrt{80} - \sqrt{45} + 3 \sqrt{2} [/tex]
[tex] = \sqrt{16.5} - \sqrt{9.5} + 3 \sqrt{2} [/tex]
[tex] = 4\sqrt{5} - 3 \sqrt{5} + 3 \sqrt{2} [/tex]
[tex] = (4 - 3) \sqrt{5} + 3 \sqrt{2} [/tex]
[tex] = \sqrt{5} + 3 \sqrt{2} [/tex]
