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Class 9MathematicsNumber SystemsExponentsHard
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What is the value of (27^2+28^2)?

Answer and explanation

Correct answer: 1513

Calculate the two squares first: 27² = 729 and 28² = 784. Therefore, 27² + 28² = 729 + 784 = 1513, so option B is correct. As an exam tip, you can verify 28² using (30 − 2)² = 900 − 120 + 4 = 784 to avoid calculation errors.

Related tags

ExponentsNumber SystemsSquare NumbersArithmetic OperationsMathematicsClass 9 Mcq
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  6. 6If (x=\sqrt{2}), what is (x^2)?
  7. 7What is the value of (2^3)?
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