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Subjects
Class 9MathematicsNumber SystemsExponentsMediumLevel 4
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What is the value of (7^2+8^2)?

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Answer and explanation

Correct answer: 113

Here, 7^2 = 49 and 8^2 = 64. Therefore, 49 + 64 = 113, so the correct answer is 113. Getting 103 would result from an error in evaluating the squares or adding them. Exam tip: find each square separately before adding the results.

Related tags

ExponentsSquaresArithmetic OperationsNumber Systems

Frequently asked questions

What is the correct answer to this question?

113

Why is this the correct answer?

Here, 7^2 = 49 and 8^2 = 64. Therefore, 49 + 64 = 113, so the correct answer is 113. Getting 103 would result from an error in evaluating the squares or adding them. Exam tip: find each square separately before adding the results.

Which subject and chapter does this question cover?

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

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  4. 4If (x=\sqrt{11}) then what is (x^2+5)?
  5. 5If (x=\sqrt{3}) then what is (x^2+x^2)?
  6. 6If (x=\sqrt{2}), what is (x^2)?
  7. 7What is the value of (2^3)?
  8. 8What is the value of (5^2)?
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  10. 10What is the value of (3^2)?
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