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.
Frequently asked questions
What is the correct answer to this question?
1764
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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