WHERE ARE BRACKETS NOT PARENTHESIS? - Texas Instruments TI-30XA Calculator

The shift key will make the common characters as marked on each applicable key available.

Other special characters, such as accents, are available but I am not sure how to make them accessible but your computer manual will provide details.

parenthesis or brackets

Are you opening the parentheses in the first place? If you don't have a left parenthesis then you don't need a right parenthesis.

Could you post the exact sequence of keystrokes you're using?

The square brackets [] are used for arrays and lists. Keep using parenthesis () instead.

7 - 2 ( 3 - 2 ( x - 4 ) )

You should be able to use parentheses in the same order in which you would write the arithmetic expression. For example, 4*(3.5-1.5)= should give you 8. Without the parentheses, this would 12.5.

Essentially, the left parenthesis comes immediately after an arithmetic operator, and the right parenthesis must close the parenthetical expression right after a number, and an operator must follow the right parenthesis.

Use the parenthesis above the 8 and 9 keys. Don't use the curly braces on those shifted keys (those are for lists) nor the square brackets on the multiply and subract keys (those are for arrays).

For negative numbers (not just exponents), use the +()- key to the right of the decimal point. For brackets, use the parenthesis keys above the 8 and 9 keys. You can nest more than one set if needed.

Just use parentheses for all brackets

There is not the slightest difference between them. Regardless of how they appear on the calculator or the screen they are parentheses.