If and , find .
As you work through the steps of this problem, remember to use the order of operations: first perform the operations within brackets. Next, evaluate the powers of the numbers. Then multiply or divide from left to right. The last step is to add or subtract from left to right.
Step 1: Find the value of .
Step 2: Find the value of .
Step 3: Substitute the values of and to find the value of .
Remember that a number raised to a negative power is equal to the reciprocal of that number raised to the positive value of the power.