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Subjects
Class 9MathematicsNumber SystemsExponentsMediumLevel 5
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What is the value of (31^2-361)?

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Answer and explanation

Correct answer: 600

First evaluate the exponent: \(31^2=31\times31=961\). Then \(961-361=600\), so 600 is the correct option. A value such as 610 may result from an error in subtraction. Exam tip: In expressions with exponents, evaluate the exponent before performing addition or subtraction.

Related tags

ExponentsNumber SystemsSquare Of A NumberArithmetic OperationsInteger Subtraction

Frequently asked questions

What is the correct answer to this question?

600

Why is this the correct answer?

First evaluate the exponent: \(31^2=31\times31=961\). Then \(961-361=600\), so 600 is the correct option. A value such as 610 may result from an error in subtraction. Exam tip: In expressions with exponents, evaluate the exponent before performing addition or subtraction.

Which subject and chapter does this question cover?

This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.

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