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What is the value of (42^2)?

Answer and explanation

Correct answer: 1764

Here, 42² means multiplying 42 by itself: \(42 \times 42 = 42 \times (40+2) = 1680+84 = 1764\). Therefore, the correct answer is 1764. A value such as 1754 can result from an addition error during multiplication. Exam tip: To check a square, split the number using \((a+b)^2\) or the distributive property.

Related tags

Number SystemsExponentsSquaresInteger MultiplicationMental ArithmeticMathematicsClass 9 Mcq

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