Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Rationalize the denominator of
2
2
−
5
+
7
\frac{2}{\sqrt{2} - \sqrt{5} + \sqrt{7}}
2
−
5
+
7
2
.
Browse the problem library