- #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
(2 + 5)2
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.
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.
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.
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.
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.