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Between which two consecutive integers does \(\sqrt{12}-1\) lie on the number line?

Answer and explanation

Correct answer: 2 and 3

Since \(3^2<12<4^2\), we have \(3<\sqrt{12}<4\). Subtracting 1 from all parts gives \(2<\sqrt{12}-1<3\), so the expression lies between 2 and 3. Option B describes the interval for \(\sqrt{12}\), not for the complete expression. Exam tip: first bound the square root between consecutive integers, then apply the remaining operation to all parts of the inequality.

Related tags

Number LineSquare RootsInequalitiesReal NumbersCompound ExpressionsRepresenting Real Numbers On The Number LinePolynomialsMathematics

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