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Which number is represented by \(\sqrt{\frac{196}{289}}\) on the number line?

Answer and explanation

Correct answer: \(\frac{14}{17}\)

Since \(196=14^2\) and \(289=17^2\), \(\sqrt{\frac{196}{289}}=\frac{\sqrt{196}}{\sqrt{289}}=\frac{14}{17}\). The square-root symbol denotes the principal, non-negative square root, so \(-\frac{14}{17}\) is not the value. Exam tip: when the numerator and denominator are perfect squares, take their positive square roots separately.

Related tags

PolynomialsReal-NumbersNumber-LineSquare-RootsRational-NumbersRepresenting Real Numbers On The Number LineMathematicsClass 10 Mcq

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