Q. 231821Which of the following is equivalent to the given expression?Choose 1 answer:(A) 267(B) 229(C) 461(D) 423
Simplify using property of exponents: Simplify the expression using the property of exponents that states anm=(na)m.(821) can be simplified because 8 is 23, so we rewrite the expression as ((23)21)/(231).
Apply power of a power rule: Apply the power of a power rule, which states (am)n=am∗n.So, ((23)1/2) becomes 23∗(1/2)=23/2.
Combine exponents using division property: Now we have the expression 223/231. We can combine the exponents by subtracting the exponent in the denominator from the exponent in the numerator because of the division property of exponents, which states am/an=am−n.So, 223−31 is our next step.
Find common denominator: Find a common denominator to subtract the fractions in the exponents.The common denominator of 2 and 3 is 6, so we convert the fractions: (23)=(69) and (31)=(62).Now we subtract the exponents: 2(69−62).
Perform subtraction of exponents: Perform the subtraction of the exponents. 269−62=267.
Match result to answer choices: Match the result to the given answer choices.267 corresponds to choice (A) 267.
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