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Would the value of the expression in exercise 21 be different if no parentheses were used?
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∙ 10y ago
No
Wiki User
∙ 10y ago
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What is the difference between simplifying and evaluating algebraic expressions?
Simplifying an expression is getting rid of any brackets or parentheses, performing as many operations as you can - including combining like terms. To evaluate an expression you would substitute the numerical values of all the variables, carry out all the operations (addition, multiplication etc) in the expression to reach the answer - the numerical value of the expression.
How do you simplify (2d-7)3?
This expression is as simple as it can be.Assuming you are multiplying by 3, an alternate way of writing it would be to open the parentheses (using the distributive law). But that won't be any simpler.
What do you do with a decimal that is in parentheses and it is squared?
The first thing I would do would be to multiply the decimal by itself, then write theresult inside the parentheses, get rid of the original decimal in there, and throw awaythat little 2 after the parentheses.
What is -3(-x-2) simplified?
-1
When using the order of operation to evaluate an expression would you always multiple to division?
NoRestate the question: When using the order of operations to evaluate an expression would you always do multiplication before division?If this is not your question, please clarify and ask the question again. :-)No. Unless parentheses or other grouping symbols indicate otherwise, you do multiplication and division in order from left to right.
Remove parentheses and simplify 7X-4X-9?
As there are no parentheses then the expression stated can be simplified as follows :- 7x - 4x - 9 = 3x - 9 If the parentheses were placed (7x - 4x) - 9 then the result would be the same. If the parentheses were placed 7x - (4x - 9) = 7x - 4x + 9 = 3x + 9.
What is the reciprocal of -x plus 3?
The reciprocal of any number or expression is one divided by that number or expression. In this case, you can also write -x + 3 as 3 - x; the reciprocal would be 1 / (3 - x). The parentheses are necessary, to indicate that you want to divide 1 by the entire expression. But if you write it in fraction form, with "3 - x" on the bottom, no parentheses are required.
What is the difference between simplifying and evaluating algebraic expressions?
Simplifying an expression is getting rid of any brackets or parentheses, performing as many operations as you can - including combining like terms. To evaluate an expression you would substitute the numerical values of all the variables, carry out all the operations (addition, multiplication etc) in the expression to reach the answer - the numerical value of the expression.
How do you simplify (2d-7)3?
This expression is as simple as it can be.Assuming you are multiplying by 3, an alternate way of writing it would be to open the parentheses (using the distributive law). But that won't be any simpler.
Why can't you have parentheses in your questions?
Limitations in the WikiAnswers database do not allow certain characters to be used in questions. Also, we would be reluctant to add commas to questions, as parentheses would allow many different variations of a question to be asked. See Related Question.
What do you do with a decimal that is in parentheses and it is squared?
The first thing I would do would be to multiply the decimal by itself, then write theresult inside the parentheses, get rid of the original decimal in there, and throw awaythat little 2 after the parentheses.
What is -3(-x-2) simplified?
-1
Does a period go after or before parentheses?
A period would go inside parentheses to finish a complete sentence, but you always need sentence-ending punctuation outside of the parentheses.
When using the order of operation to evaluate an expression would you always multiple to division?
NoRestate the question: When using the order of operations to evaluate an expression would you always do multiplication before division?If this is not your question, please clarify and ask the question again. :-)No. Unless parentheses or other grouping symbols indicate otherwise, you do multiplication and division in order from left to right.
What two basic purposes do the guarantees of free expression serve?
Freedom of expression has multiple implicit and explicit purposes. Free expression allows for dissent against power against the specter of suppression. Free expression forms the foundation of other natural rights such as assembly and faith. These similar rights would become meaningless unless freedom of expression existed to exercise them.
Why do you need to write brackets after such command as getName in java?
The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.The parentheses are used in methods to specify arguments. Some methods don't use arguments; but it would in fact be more confusing, not less, to omit the parentheses in this case - because the parentheses give some kind of consistency.The parentheses also help make it clear when something written after a dot is a field, and when it is a method. For this reason, in languages that allow you to either write or not write the parentheses for methods without arguments, I would always write them, for clarity and consistency.
What would identify an expression as quadratic?
An expression is quadratic is the equation is in the form ax2 + bx + c. a, b, and c are all constants. They may be different or equal.
