Question

so sánh M= \(\sqrt{31}-\sqrt{13}\) và N= 6 -\(\sqrt{11}\)

Answer 1

ta có: N=6-\(\sqrt{11}\)

=\(\sqrt{36}\)-\(\sqrt{11}\)

ta có \(\sqrt{31}\)<\(\sqrt{36}\);\(\sqrt{13}\)>\(\sqrt{11}\)

\(\Rightarrow\)\(\sqrt{31}\)-\(\sqrt{13}\)<\(\sqrt{36}\)-\(\sqrt{11}\)

\(\Leftrightarrow\)\(\sqrt{31}\)-\(\sqrt{13}\)<6-\(\sqrt{11}\)

Answer 2

thanks pn nhìu na 

Answer 3

Cảm ơn bạn

Answer 4

pn giải dùm mk mấy bài kia nữa ik mk cần gấp lắm