Understanding (9/8)^-2
In mathematics, a negative exponent indicates the reciprocal of the base raised to the positive version of the exponent. This means:
(9/8)^-2 = 1 / (9/8)^2
Let's break down the calculation:
Step 1: Calculate (9/8)^2
(9/8)^2 = (9/8) * (9/8) = 81/64
Step 2: Find the reciprocal of the result
1 / (81/64) = 64/81
Conclusion
Therefore, (9/8)^-2 = 64/81.
Remember that any number raised to a negative exponent is equivalent to its reciprocal raised to the positive version of that exponent.