Step 1: Evaluate the terms with negative exponents using the rule a−n=an1 or (ba)−n=(ab)n.
(31)−3=33=27
(21)−3=23=8
(41)−3=43=64
Step 2: Substitute these values back into the original expression.
[27−8]÷64
Step 3: Perform the subtraction inside the brackets.
19÷64
Step 4: Perform the division.
6419
The evaluated expression is 6419.
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