Solve for the radicand from a quotient: Find ? such that 1872 / √? = 234.

Difficulty: Easy

Correct Answer: 64

Explanation:


Introduction / Context:
This problem asks for the number whose square root appears in a denominator. It reduces to isolating the square root and then squaring to retrieve the radicand.


Given Data / Assumptions:

  • Equation: 1872 / √? = 234.
  • All values are positive reals.

Concept / Approach:
Isolate √? by dividing 1872 by 234. Once √? is known, square it to find ?.


Step-by-Step Solution:

Compute √? = 1872 / 234.234 * 8 = 1872, so √? = 8.Square both sides: ? = 8^2 = 64.

Verification / Alternative check:
Check: 1872 / √64 = 1872 / 8 = 234. Works exactly.


Why Other Options Are Wrong:

  • 324, 256 would yield square roots 18 or 16, not 8.
  • 8 is √?, not ? itself.
  • 36 gives √? = 6, which is incorrect here.

Common Pitfalls:
Stopping at √? = 8 and selecting 8 as the answer. The question asks for ?, not its square root.


Final Answer:
64

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