[tex]9 \sqrt{27} + 5 \sqrt{24} -(-2 \sqrt{26} - \sqrt{150} + 3 \sqrt{234}) =[/tex]
[tex]27\sqrt{3} + 10 \sqrt{6} -(-2 \sqrt{26} -5 \sqrt{6} +9 \sqrt{26} )=[/tex]
[tex]27\sqrt{3} + 10 \sqrt{6} -7 \sqrt{26} + 5 \sqrt{6}=[/tex]
[tex]=27 \sqrt{3} + 15 \sqrt{6} - 7 \sqrt{26} [/tex]