Question

Cat este -3 radical din 6?

Answer 1

$-3\sqrt{6}=-\sqrt{3^2\cdot6}=-\sqrt{54}\\\sqrt{49} < \sqrt{54} < \sqrt{64}\\7 < \sqrt{54} < 8\\-7 > - \sqrt{54} > -8 \iff-8 < -\sqrt{54} < -7\\-3\sqrt6 \in(-8,-7) \\-3\sqrt{6}\approx -7,34...$