A negative exponent is the inverse of the same number with a positive exponent.
Examples:
a.) [tex] 4^{-2} = \frac{1}{4 ^{2} } = \frac{1}{16} [/tex]
b.) [tex] \frac{1}{7 ^{-2} } = 7 ^{2} =49[/tex]
c.) [tex] \frac{1}{x ^{-2} } = 25[/tex]
[tex] x^{2} =25[/tex]
[tex] \sqrt{x ^{2} } = \sqrt{25} [/tex]
x=5
