Problem Understanding: Understand the problem.We need to evaluate the expression ((1)/(81))((1)/(2))∗((1)/(81))(−(3)/(4)). This involves working with exponents and understanding the properties of exponents.
Exponent Properties: Apply the properties of exponents.When multiplying expressions with the same base, we add the exponents. So, we can rewrite the expression as (811)(21−43).
Exponent Subtraction: Subtract the exponents.(21)−(43)=(42)−(43)=−(41).So, the expression now is ((811)−(41)).
Base Evaluation: Evaluate the base.The base is 811, which is the same as 81−1.
Negative Exponent Rule: Apply the negative exponent rule.A negative exponent means we take the reciprocal of the base. So, (811)−41 is the same as (811)41.
Fourth Root Evaluation: Evaluate the fourth root of 81. The fourth root of 81 is 3 because 34=81. So, the final answer is 3.
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