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If point P is located at \\(\sqrt{196}-\sqrt{81}\\) on the number line, what is the coordinate of P?

Answer and explanation

Correct answer: 5

Since \(\sqrt{196}=14\) and \(\sqrt{81}=9\), we get \(\sqrt{196}-\sqrt{81}=14-9=5\). Therefore, the coordinate of P is 5. Option D gives only the first square root and ignores the subtraction. Exam tip: evaluate the square roots first, then perform the indicated operation.

Related tags

Number LineExact Square RootsReal NumbersRepresenting Real Numbers On The Number LinePolynomialsMathematicsClass 10 Mcq

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