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What is the value of (32^2 + 33^2)?

Answer and explanation

Correct answer: 2113

Direct calculation: \(32^2=1024\) and \(33^2=1089\), so the sum is 1024+1089=2113. Quick formula: \(n^2+(n+1)^2=2n^2+2n+1\); with n=32 this gives 2113 as well. Why distractors are wrong: 2103 and 2123 are 10 away and 2119 is 6 away from the correct sum, so they result from simple arithmetic mistakes. Exam tip: use the formula for consecutive integers' squares to compute such sums faster and avoid addition errors.

Related tags

ExponentsSquaresArithmeticNumber-SystemsNumber SystemsMathematicsClass 9 Mcq

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