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Subjects
Class 10MathematicsPolynomialsOperations on real numbers and the laws of exponentsHardLevel 45
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If (u=\frac{\sqrt{3}}{\sqrt{12}}), what is the value of (u^{-2})?

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Answer and explanation

Correct answer: (4)

(\frac{\sqrt{3}}{\sqrt{12}}=\sqrt{\frac{3}{12}}=\frac{1}{2}), so (u^{-2}=4). In exams, simplify the radical first.

Related tags

RadicalsNegative ExponentsReal Numbers

Frequently asked questions

What is the correct answer to this question?

(4)

Why is this the correct answer?

(\frac{\sqrt{3}}{\sqrt{12}}=\sqrt{\frac{3}{12}}=\frac{1}{2}), so (u^{-2}=4). In exams, simplify the radical first.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Operations on real numbers and the laws of exponents.

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  5. 5If \(a\ne0\), what is the value of \(a^0\)?
  6. 6What is (10^{-2}) equal to?
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