Let x/y be the number
y/x will be the reciprocal
quotient of that number and its reciprocal will be:
x/y
-----
y/x
which will be equal to the product:
x/y * x/y
which will simplify to:
x^2
----
y^2
and is equal to based on the property of exponents
(x/y)2
which is the square of the original number x/y.