## 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.