Sagot :
Answer:
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1.)
[tex]6 \sqrt{3} [/tex]
2.)
[tex]16 \sqrt{11} - 9 \sqrt{3} [/tex]
3)
[tex] - 4 \sqrt{7} + 9 \sqrt{3} \: \: or \: \\ 9 \sqrt{3} - 4 \sqrt{7} [/tex]
4)
[tex]84[/tex]
5)
[tex]5[/tex]
