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Class 9MathematicsNumber SystemsExponentsMedium
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What is the value of (28^2-284)?

Answer and explanation

Correct answer: 500

First find the square of 28: \(28^2=28\times28=784\). Then \(784-284=500\). Therefore, the correct answer is 500. Getting 490 may result from an error in subtraction. Exam tip: evaluate the exponent first, then perform the remaining operations.

Related tags

ExponentsNumber SystemsSquaresArithmetic OperationsSubtractionMathematicsClass 9 Mcq
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