[tex]a)2 \sqrt{3} -3*3 \sqrt{2} *4 \sqrt{3} - 6\sqrt{2} +10 \sqrt{3} -20 \sqrt{2} = \\
2 \sqrt{3} -36 \sqrt{6} - 6\sqrt{2} +10 \sqrt{3} -20 \sqrt{2} = \\
=12 \sqrt{3} -36 \sqrt{6}-26 \sqrt{2} \\b) |3- \sqrt{2} | -|2- \sqrt{5}|+|2+\sqrt{5}|-|1- \sqrt{2} |= \\
=3- \sqrt{2} - \sqrt{5} - \sqrt{2} +2 +\sqrt{5} - \sqrt{2} -1= \\
=4- 3\sqrt{2} [/tex]
