Q. Select the expression that is equivalent to (5x)−21(5x)2(5x)215x5x1
Rephrase Question: We need to rephrase the question in one sentence.
Analyze Given Expression: Let's analyze the given expression (5x)−(1)/(2). The negative exponent means we take the reciprocal of the base, and the (1/2) exponent means we take the square root. So, (5x)−(1)/(2) is equivalent to 1 over the square root of 5x.
Check Options: Now let's check each option to see which one matches our analysis.The first option is (5x)2. This is not equivalent because it represents the square root of (5x)2, not the reciprocal of the square root of 5x.
Option 1 Analysis: The second option is (1)/((5x)2). This option represents the reciprocal of the square root of (5x)2, which simplifies to 1/(5x), not the reciprocal of the square root of 5x.
Option 2 Analysis: The third option is 5x. This is not equivalent because it represents the square root of 5x, not the reciprocal of the square root of 5x.
Option 3 Analysis: The fourth option is (1)/(5x). This option represents the reciprocal of the square root of 5x, which matches our analysis of the given expression (5x)−(1)/(2).
Option 4 Analysis: Therefore, the expression equivalent to (5x)−(21) is 5x1.
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