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What is the value of (19^2+20^2)?
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Answer and explanation
Correct answer: 761
First calculate the two squares: 19^2 = 361 and 20^2 = 400. Therefore, 19^2 + 20^2 = 361 + 400 = 761, so option B is correct. In an exam, calculate each exponent separately before adding the terms to avoid confusing addition of squares with the square of a sum.
Frequently asked questions
What is the correct answer to this question?
761
Why is this the correct answer?
First calculate the two squares: 19^2 = 361 and 20^2 = 400. Therefore, 19^2 + 20^2 = 361 + 400 = 761, so option B is correct. In an exam, calculate each exponent separately before adding the terms to avoid confusing addition of squares with the square of a sum.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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