To expand parentheses and handle the negative sign inside, you can distribute the negative sign to each term inside the parentheses. This means that you will change the sign of each term inside the parentheses. For example, if you have -(3x + 4), you would distribute the negative sign to get -3x - 4. This is done by changing the positive terms inside the parentheses to negative and the negative terms to positive. **

To open parentheses, you simply press the key that has the "(" symbol on it. On most keyboards, this key is located to the right of the "P" key. If you are using a mobile device, you can usually find the parentheses symbol by switching to the symbols or numbers keyboard. **

Parentheses are used to provide additional information or clarification within a sentence. They can contain extra details, examples, or explanations that are not essential to the main point of the sentence. It is important to remember that the sentence should still make sense if the information inside the parentheses is removed. Additionally, parentheses can also be used to enclose citations, dates, or mathematical equations within a sentence. **

To change parentheses, you can simply replace them with different types of parentheses or remove them altogether. For example, you can change round parentheses ( ) to square brackets [ ] or curly braces { }. You can also change the placement of parentheses to alter the grouping of elements in a mathematical expression or sentence. Additionally, you can add or remove parentheses to clarify the meaning of a statement or to improve readability. **

To calculate parentheses, you follow the order of operations, which is PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Start by solving the operations inside the parentheses first, then work your way outwards following the order of operations. If there are nested parentheses, solve the innermost set first and then move outward. This ensures that you calculate the expressions within the parentheses before combining them with the rest of the equation. **

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To correctly read parentheses, you should start by evaluating the expression inside the innermost set of parentheses first. Then, work your way outwards, following the order of operations (parentheses, exponents, multiplication and division, addition and subtraction). It is important to remember that parentheses are used to group parts of an expression together, indicating that those parts should be evaluated as a single unit. By following these steps, you can ensure that you read parentheses correctly and accurately evaluate mathematical expressions. **

Parentheses are used in formulas to indicate the order of operations. They help clarify which operations should be performed first, ensuring that the formula is evaluated correctly. By using parentheses, the formula's intended meaning is clearly communicated, and potential ambiguity is avoided. Additionally, parentheses can be used to group terms together, making the formula easier to read and understand. **