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What is the value of (8^2-2^3)?
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Answer and explanation
Correct answer: 56
First evaluate the powers: \(8^2=64\) and \(2^3=8\). Therefore, \(8^2-2^3=64-8=56\). The value 48 may result from incorrectly taking \(2^3\) as 16. Exam tip: In expressions with exponents, evaluate the powers before addition or subtraction.
Frequently asked questions
What is the correct answer to this question?
56
Why is this the correct answer?
First evaluate the powers: \(8^2=64\) and \(2^3=8\). Therefore, \(8^2-2^3=64-8=56\). The value 48 may result from incorrectly taking \(2^3\) as 16. Exam tip: In expressions with exponents, evaluate the powers before addition or subtraction.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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