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Q: Is x on complement of real numbers is a binary operation?
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How does the commutative property describe the real numbers?

For the set of real numbers, R, a binary operation is a function from R X R into R, where R X R is the x-y plane. A binary operation is commutative if the value returned by the operation is the same regardless of the order of the operands. For real numbers the two most basic commutative binary operations are addition and multiplication and they can be expressed in the following way:If a and b are any two real numbers then a + b = b + a (addition is commutative) and ab = ba ( multiplication is commutative).


Why are the set of real numbers is not commuted under subtraction and addition?

Real numbers are commutative (if that is what the question means) under addition. Subtraction is a binary operation defined so that it is not commutative.


Do the complex numbers for a group under binary operation ' plus '?

Yes, the complex numbers, as well as the real numbers which are a subset of the complex numbers, form groups under addition.


How is the additive inverse important?

It gives closure to the set of real numbers with regard to the binary operation of addition. This makes the set a ring. The additive inverse is used, sometimes implicitly, in subtraction.


Are real numbers closed under the square root operation?

No. Negative numbers are real but their square roots are not.


Why irrational numbers denoted by Q'?

Irrational numbers may be denoted by Q' since they are the complement of Q in R, the set of Real numbers.


What is complements of a set?

The complement of a set refers to everything that is NOT in the set. A "universe" (a set from which elements may be taken) must always be specified (perhaps implicitly). For example, if your "universe" is the real numbers, and the set you are considering is 0


Why isn't subtraction included as an operation on real numbers?

Subtraction is definitely an operation defined on real numbers. I'm guessing you are actually asking why subtraction is not included as a commutative operation, this is because a-b is not always equal to b-a.


What two numbers equal 21 and 48?

A binary operation acting on two numbers (real or complex) must give the same answer. They cannot give two different answer. If different answers are required the binary operations must be different and, to identify the numbers involved, these binary operations must be specified. For example, 13.5 and 34.5 give 21 as a difference and 48 as a sum. There will be another pair for addition and multiplication, still another pair for subtraction and multiplication, etc.


How do you write an irrational number in algebra?

There is no representation for irrational numbers: they are represented as real numbers that are not rational. The set of real numbers is R and set of rational numbers is Q so that the set of irrational numbers is the complement if Q in R.


Is set of real numbers a group?

The answer depends on the operation under consideration.


What are the different rules in governing operations of real numbers?

The set of real numbers is closed under addition, subtraction, multiplication, and division (except that you cannot divide by zero). By closed, this means that if the two numbers in the operation are both real numbers, the result of the operation will always be a real number. Dividing by zero is undefined (for all practical purposes)