Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Explain, in one clear sentence, why
5
−
2
=
1
25
5^{-2}=\dfrac{1}{25}
5
−
2
=
25
1
.
Browse the problem library