Q. (91)−23⋅(81)32What is the value of the given expression?
Understand and Simplify Exponents: Understand the given expression and simplify the exponents.The given expression is (91)−23×(81)32. We need to simplify each part of the expression separately.
Simplify ((1)/(9))(−(3)/(2)): Simplify the first part of the expression ((1)/(9))(−(3)/(2)). The negative exponent means we take the reciprocal of the base and then apply the positive exponent. So, ((1)/(9))(−(3)/(2)) becomes (9)(3/2).
Calculate (9)(3/2): Calculate (9)(3/2).Since 9 is a perfect square (32), we can rewrite (9)(3/2) as (32)(3/2). When we raise a power to a power, we multiply the exponents, so (32)(3/2)=3(2∗(3/2))=33.Now calculate 33=3×3×3=27.
Simplify ((1)/(8))((2)/(3)): Simplify the second part of the expression ((1)/(8))((2)/(3)). The exponent (2/3) means we take the cube root of the base and then square it. So, ((1)/(8))((2)/(3)) becomes (1/2)2.
Calculate (1/2)2: Calculate (1/2)2.Square the fraction(1/2) to get (1/2)2=1/4.
Multiply Results: Multiply the results from Step 3 and Step 5.Now we multiply 27 (from Step 3) by 41 (from Step 5) to get the final value of the expression.27×(41)=427=6.75.
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