Simplifying (9/7)^-2 without Exponents
The expression (9/7)^-2 may seem intimidating at first glance, but it can be simplified using basic exponent rules. Here's how to break it down:
Understanding Negative Exponents
A negative exponent indicates the reciprocal of the base raised to the positive version of the exponent. In simpler terms:
x^-n = 1/x^n
Applying this to our expression:
(9/7)^-2 = 1/(9/7)^2
Simplifying the Expression
Now we need to square the fraction (9/7):
1/(9/7)^2 = 1/(81/49)
Dividing by a fraction is the same as multiplying by its reciprocal:
1/(81/49) = 1 * (49/81)
Finally, we get:
**(9/7)^-2 = ** 49/81
Therefore, (9/7)^-2 without exponents is simply 49/81.