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What is the value of \(9^2 + 4^3\)?
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Answer and explanation
Correct answer: 145
Compute the powers first: \(9^2=81\) and \(4^3=64\). Adding these gives \(81+64=145\), so 145 is correct. Option A (93) is a common mistake from treating \(4^3\) as \(4\times3=12\). Exam tip: always evaluate exponents before performing addition or other operations.
Frequently asked questions
What is the correct answer to this question?
145
Why is this the correct answer?
Compute the powers first: \(9^2=81\) and \(4^3=64\). Adding these gives \(81+64=145\), so 145 is correct. Option A (93) is a common mistake from treating \(4^3\) as \(4\times3=12\). Exam tip: always evaluate exponents before performing addition or other operations.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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