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Which point does \(\sqrt{4}\) represent on the number line?

Answer and explanation

Correct answer: 2

\(\sqrt{4}=2\) because the square of 2 is 4. The principal square root is always non-negative, so −2 is not the value of \(\sqrt{4}\), although \((-2)^2\) is also 4. Exam tip: remember the square roots of perfect squares, such as \(\sqrt{1}=1\), \(\sqrt{4}=2\), and \(\sqrt{9}=3\).

Related tags

Square RootsNumber LineReal NumbersPerfect SquaresRepresenting Real Numbers On The Number LinePolynomialsMathematicsClass 10 Mcq

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