Question

18(radical3-2radical2)+15(2radical3-3radical2)-7(3radical3-radical2)​

Answer 1

$= 18( \sqrt{3} - 2 \sqrt{2}) + 15(2 \sqrt{3} - 3 \sqrt{2}) - 7(3 \sqrt{3} - \sqrt{2})$

$= 18 \sqrt{3} - 36 \sqrt{2} + 30 \sqrt{3} - 45 \sqrt{2} - 21 \sqrt{3} + 7 \sqrt{2}$

$= 27 \sqrt{3} - 74 \sqrt{2}$

SPER CĂ ESTE OK!