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

  • Thread starter Gringo123
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In summary, the conversation discusses the value of an expression, with one person mentioning their book claims it should be 9 but it is most likely 49. Another person suggests a possible typo or sign mistake, while another person mentions the book may have forgotten to add a number. They all agree that it is not likely to be 9 based on the given information.
  • #1
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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  • #2
Unless your book has a different meaning for it, 7x7 will be 49.
 
  • #3
5 + 22, on the other hand...
 
  • #4
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
 
  • #5
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.
 
  • #6
Or the book forgot to add the 4...
 
  • #7
I cannot imagine an answer that is much more INcorrect for this than [tex] 9![/tex].
 
  • #8
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.
 

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

What is the solution to the math puzzle (2+5)2 = 9?

The solution is 9. The equation follows the order of operations, where the parentheses are solved first, giving us 7. Then, the multiplication is solved, giving us a final answer of 9.

How can (2+5)2 equal 9?

This is because of the order of operations in math. The parentheses are solved first, giving us 7. Then, the multiplication is solved, giving us a final answer of 9.

Can you explain the steps to solving (2+5)2 = 9?

The equation follows the order of operations, where the parentheses are solved first, giving us 7. Then, the multiplication is solved, giving us a final answer of 9. So the steps are: 2+5 = 7, and 7x2 = 9.

What other math equations follow the same order of operations as (2+5)2 = 9?

Any equation that has parentheses or brackets will follow the same order of operations. For example, (4+3)3 = (7)3 = 21, or [2+(5x3)]4 = [2+15]4 = 17x4 = 68.

Are there any exceptions to the order of operations in math?

There are no exceptions to the order of operations in math. It is a rule that must be followed in order to get the correct answer. However, sometimes parentheses or brackets may be used to change the order of operations in a specific equation.

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