Question

SO SANH

\(-2\sqrt{5}va-5\sqrt{2}\)

Answer 1

\(-2\sqrt{5}=-\sqrt{2^2.5}=-\sqrt{20}\)

\(-5\sqrt{2}=-\sqrt{5^2.2}=-\sqrt{50}\)

\(\Rightarrow-\sqrt{20}>-\sqrt{50}\)

hay \(-2\sqrt{5}>-5\sqrt{2}\)

Answer 2

> 

nha b hien

Answer 3

\(-2\sqrt{5}=-\sqrt{2^2.5}=-\sqrt{20}\)

\(-5\sqrt{2}=-\sqrt{5^2.2}=-\sqrt{50}\)

vì \(20< 50\)nen \(-\sqrt{20}>-\sqrt{50}\)

Answer 4

ko biet cho ban nao :D

Answer 5

các bn làm đúng hết rồi