Question

efectuați calculele b) 21V150 +2V3(3V12 - 50)- 2V18 - 48)= ?
V= radical ​

Answer 1

$21 \sqrt{150} + 2 \sqrt{3} (3 \sqrt{12 } - 50) - (2 \sqrt{18} - 48) =$

$= 150 \sqrt{6} + 2 \sqrt{3} (3 \sqrt{12} - 50) - (2 \sqrt{18} - 48 =$

$= 105 \sqrt{6} + 2 \sqrt{3} (6 \sqrt{3} - 50) - (2 \sqrt{18} - 48) =$

$= 105 \sqrt{6} + 2 \sqrt{3} (6 \sqrt{3} - 50) - (6 \sqrt{2} - 48) =$

$= 105 \sqrt{6} + 36 - 100 \sqrt{3} - (6 \sqrt{2} - 48) =$

$= 105 \sqrt{6} + 36 - 100 \sqrt{3} - 6 \sqrt{2} + 48 =$

$= 105 \sqrt{6} + 84 - 100 \sqrt{3} - 6 \sqrt{2}$