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What is the value of (13^2-69)?
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Answer and explanation
Correct answer: 100
Evaluate the exponent first: \(13^2=13\times13=169\). Then \(169-69=100\), so 100 is the correct answer. A result such as 95 can arise from an error in subtraction. Exam tip: calculate powers before performing addition or subtraction.
Frequently asked questions
What is the correct answer to this question?
100
Why is this the correct answer?
Evaluate the exponent first: \(13^2=13\times13=169\). Then \(169-69=100\), so 100 is the correct answer. A result such as 95 can arise from an error in subtraction. Exam tip: calculate powers before performing 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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