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Sagot :
Algebra is a sort of language, and has its own vocabulary....
Rational Number
Irrational numbers
Real Numbers
Variables
Expression
Terms
Coefficient
Constant
Algebraic Expressions
An algebraic expression is one or more algebraic terms in a phrase. It can include variables, constants, and operating symbols, such as plus and minus signs. It's only a phrase, not the whole sentence, so it doesn't include an equal sign.Algebraic expression:
3x2 + 2y + 7xy + 5In an algebraic expression, terms are the elements separated by the plus or minus signs. This example has four terms, 3x2, 2y,7xy, and 5. Terms may consist of variables and coefficients, or constants.Variables
In algebraic expressions, letters represent variables. These letters are actually numbers in disguise. In this expression, the variables are x and y. We call these letters "variables" because the numbers they represent can vary—that is, we can substitute one or more numbers for the letters in the expression.Coefficients
Coefficients are the number part of the terms with variables. In3x2 + 2y + 7xy + 5, the coefficient of the first term is 3. The coefficient of the second term is 2, and the coefficient of the third term is 7.If a term consists of only variables, its coefficient is 1.Constants
Constants are the terms in the algebraic expression that contain only numbers. That is, they're the terms without variables. We call them constants because their value never changes, since there are no variables in the term that can change its value. In the expression 7x2 + 3xy + 8 the constant term is "8."Real Numbers
In algebra, we work with the set of real numbers, which we can model using a number line.Real numbers describe real-world quantities such as amounts, distances, age, temperature, and so on. A real number can be an integer, a fraction, or a decimal. They can also be either rational or irrational. Numbers that are not "real" are called imaginary. Imaginary numbers are used by mathematicians to describe numbers that cannot be found on the number line. They are a more complex subject than we will work with here.Rational Numbers
We call the set of real integers and fractions "rational numbers."Rational comes from the word "ratio" because a rational number can always be written as the ratio, or quotient, of two integers.Examples of rational numbers
The fraction ½ is the ratio of 1 to 2.Since three can be expressed as three over one, or the ratio of 3 to one, it is also a rational number.The number "0.57" is also a rational number, as it can be written as a fraction.Irrational Numbers
Some real numbers can't be expressed as a quotient of two integers. We call these numbers "irrational numbers". The decimal form of an irrational number is a non-repeating and non-terminating decimal number. For example, you are probably familiar with the number called "pi". This irrational number is so important that we give it a name and a special symbol!Pi cannot be written as a quotient of two integers, and its decimal form goes on forever and never repeats.
Rational Number
Irrational numbers
Real Numbers
Variables
Expression
Terms
Coefficient
Constant
Algebraic Expressions
An algebraic expression is one or more algebraic terms in a phrase. It can include variables, constants, and operating symbols, such as plus and minus signs. It's only a phrase, not the whole sentence, so it doesn't include an equal sign.Algebraic expression:
3x2 + 2y + 7xy + 5In an algebraic expression, terms are the elements separated by the plus or minus signs. This example has four terms, 3x2, 2y,7xy, and 5. Terms may consist of variables and coefficients, or constants.Variables
In algebraic expressions, letters represent variables. These letters are actually numbers in disguise. In this expression, the variables are x and y. We call these letters "variables" because the numbers they represent can vary—that is, we can substitute one or more numbers for the letters in the expression.Coefficients
Coefficients are the number part of the terms with variables. In3x2 + 2y + 7xy + 5, the coefficient of the first term is 3. The coefficient of the second term is 2, and the coefficient of the third term is 7.If a term consists of only variables, its coefficient is 1.Constants
Constants are the terms in the algebraic expression that contain only numbers. That is, they're the terms without variables. We call them constants because their value never changes, since there are no variables in the term that can change its value. In the expression 7x2 + 3xy + 8 the constant term is "8."Real Numbers
In algebra, we work with the set of real numbers, which we can model using a number line.Real numbers describe real-world quantities such as amounts, distances, age, temperature, and so on. A real number can be an integer, a fraction, or a decimal. They can also be either rational or irrational. Numbers that are not "real" are called imaginary. Imaginary numbers are used by mathematicians to describe numbers that cannot be found on the number line. They are a more complex subject than we will work with here.Rational Numbers
We call the set of real integers and fractions "rational numbers."Rational comes from the word "ratio" because a rational number can always be written as the ratio, or quotient, of two integers.Examples of rational numbers
The fraction ½ is the ratio of 1 to 2.Since three can be expressed as three over one, or the ratio of 3 to one, it is also a rational number.The number "0.57" is also a rational number, as it can be written as a fraction.Irrational Numbers
Some real numbers can't be expressed as a quotient of two integers. We call these numbers "irrational numbers". The decimal form of an irrational number is a non-repeating and non-terminating decimal number. For example, you are probably familiar with the number called "pi". This irrational number is so important that we give it a name and a special symbol!Pi cannot be written as a quotient of two integers, and its decimal form goes on forever and never repeats.
Dff. language of algebra has a first basic or four fundamental operation
-additive property
distributive property
commutative property.
H.C.F / G.C.D
Integers
L.C.M
Multiples
Multiplicative Identity
Multiplicative Inverse
Numbers
Percentages
Profit and Loss
Ratio and Proportion
Sieve of Eratosthenes
Simple Interest
Unitary Method
Algebraic Equation
Algebraic Expression
Coefficient Of Variable
Constants
Order Relation
Transpose
Variables
-additive property
distributive property
commutative property.
H.C.F / G.C.D
Integers
L.C.M
Multiples
Multiplicative Identity
Multiplicative Inverse
Numbers
Percentages
Profit and Loss
Ratio and Proportion
Sieve of Eratosthenes
Simple Interest
Unitary Method
Algebraic Equation
Algebraic Expression
Coefficient Of Variable
Constants
Order Relation
Transpose
Variables
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