Revisiting the Value of (2+5)2: 9 or 49?

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Homework Help Overview

The discussion revolves around the expression (2 + 5)2 and its value, with participants questioning whether it should be interpreted as 9 or 49. The subject area pertains to basic arithmetic and order of operations.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants explore different interpretations of the expression, questioning the meaning of the notation and considering possible typographical errors in the source material.

Discussion Status

The discussion is active, with various interpretations being explored. Some participants suggest that a typo may have occurred in the book, while others express disbelief at the provided answer of 9. Guidance is offered in the form of considerations regarding potential mistakes in the expression.

Contextual Notes

Participants note the possibility of typographical errors in the textbook and express uncertainty about the intended meaning of the expression as written.

Gringo123
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Is the value of this expression 49? The andwers in my book say that it should be 9!
(2 + 5)2
 
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Unless your book has a different meaning for it, 7x7 will be 49.
 
5 + 22, on the other hand...
 
Thanks guys. It's laid out exactly as I have written it so I doubt it's meant to be 5 + 2^2.
Thanks again
 
If the plus sign were a minus sign, you'd get (-3)2=9. Could be a typo or a sign mistake somewhere along the way.
 
Or the book forgot to add the 4...
 
I cannot imagine an answer that is much more INcorrect for this than [tex]9![/tex].
 
Thanks a lot everyone. I wouldn't be the 1st time that a typo had appeared in this book that I'm using. I think that is what has happened. I just wanted to make sure I wasn't missing somthing as I am teaching myself maths via books and internet.
 

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