1)
[tex] \sqrt{2} - 3 \sqrt{5} + 4 \sqrt{2} - 5 \sqrt{5} \\ 5 \sqrt{2} - 3 \sqrt{5} - 5 \sqrt{5} \\ {\boxed{ { \red{ \bold{ \underline{5 \sqrt{2} - 8 \sqrt{5} }}}}}}[/tex]
2)
[tex] - 9 \sqrt{3} + 4 \sqrt{7} - \sqrt{3} - \sqrt{7} \\ - 10 \sqrt{3} + 4 \sqrt{7} - \sqrt{7} \\ {\boxed{ { \red{ \bold{ \underline{ - 10 \sqrt{3} + 3 \sqrt{7} }}}}}}[/tex]
Espero haberte ayudado :)
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Verified answer
1)
[tex] \sqrt{2} - 3 \sqrt{5} + 4 \sqrt{2} - 5 \sqrt{5} \\ 5 \sqrt{2} - 3 \sqrt{5} - 5 \sqrt{5} \\ {\boxed{ { \red{ \bold{ \underline{5 \sqrt{2} - 8 \sqrt{5} }}}}}}[/tex]
2)
[tex] - 9 \sqrt{3} + 4 \sqrt{7} - \sqrt{3} - \sqrt{7} \\ - 10 \sqrt{3} + 4 \sqrt{7} - \sqrt{7} \\ {\boxed{ { \red{ \bold{ \underline{ - 10 \sqrt{3} + 3 \sqrt{7} }}}}}}[/tex]
Espero haberte ayudado :)