That's because the result may VARY, depending on the order. Try, for example, 1 + 2 x 3, which can either be 7 or 9, depending on which calculation you do first.
Therefore, it is important to have a general agreement on the order of operations.
what is astronomers and mathmaticians
hypatia of Alexandria
Pringles
"why" is not a mathematical symbol.
Pengui
John Napier.
George washington carver
It means that the calculator can follow the order of operations and do the order of operations for you but, you need to know how to do them on your own too.
If you put in parentheses, you can change the order of operations in many cases, as parentheses come before everything in the order of operations.
about 1,241,100,000,000 but all i know is 3.1415926535987932384
yes
Because if you did operations in an impermissible order, or violated laws of operations, then your solution to the equation is wrong.