Question

Biểu thức \(\sqrt{\left(\sqrt{7}-5\right)^2}\)+\(\sqrt{\left(2-\sqrt{7}\right)^2}\) có giá trị bằng

Answer 1

\(\sqrt{\left(\sqrt{7}-5\right)^2}+\sqrt{\left(2-\sqrt{7}\right)^2}=\sqrt{7}-5+2-\sqrt{7}=-3\)

Answer 2

đề bài thế này chứ: \(\sqrt{\left(\sqrt{7}-5\right)^2}+\sqrt{\left(2-\sqrt{7}\right)^2}\)

=\(5-\sqrt{7}+\sqrt{7}-2=3\)

Answer 3

\(\sqrt{\left(\sqrt{7-5}\right)^2}\)\(+\)\(\sqrt{\left(2-\sqrt{7}\right)^2}\)\(=\sqrt{7-5+2-\sqrt{7}=-7}\)