Answer:
[tex]5 \sqrt{2} [/tex]
Step-by-step explanation:
[tex] \sqrt{50} - \sqrt{32} + 2 \sqrt{8} \\ 5 \sqrt{2} - 4 \sqrt{2} + 4 \sqrt{2} \\ \sqrt{2} + 4 \sqrt{2} \\ 5 \sqrt{2} [/tex]