Question

Simplifique as expressões.-√54-√486-√294

Answer 1

$\ \ - \sqrt{54} - \sqrt{486} - \sqrt{ 294}\\ \\=- \sqrt{9\cdot6} - \sqrt{81\cdot6} - \sqrt{ 49\cdot 6}\\ \\=- \sqrt{9}\cdot\sqrt{6} - \sqrt{81}\cdot\sqrt{6} - \sqrt{49}\cdot \sqrt{6}\\ \\=- 3\sqrt{6} - 9\sqrt{6} -7\sqrt{6}\\ \\=- 19\sqrt{6}$

Answer 2

-7,34 -22,04 -17,14 = -2,44