This document provides an overview of algebraic expressions and identities. It defines terms, factors, coefficients, monomials, binomials, polynomials, like and unlike terms. It explains how to perform addition, subtraction, multiplication, and division of algebraic expressions. It also defines what an identity is and how to apply identities.
Algebra is used in many field in many different ways to solve equation problems, and in business algebra is also used or in our day to day life it is also used. ... Algebra is a way of keeping track of unknown values, which can be used in equations.
Algebra is used in many field in many different ways to solve equation problems, and in business algebra is also used or in our day to day life it is also used. ... Algebra is a way of keeping track of unknown values, which can be used in equations.
This is an interactive presentation which contains the information about Algebra for student-teacher , who are going to teach maths. Further, it contains information about the curriculum alignment and objectives of algebraic teaching which are mentioned in Curriculum of Pakistan.
All the best to all students of class IX...This PPT will makes your difficulties easy to do....You will understand the polynomial chapter easily by seeing this ....Thanks for watching this ..Please Share, Like and Subscribe the PPT
This is an interactive presentation which contains the information about Algebra for student-teacher , who are going to teach maths. Further, it contains information about the curriculum alignment and objectives of algebraic teaching which are mentioned in Curriculum of Pakistan.
All the best to all students of class IX...This PPT will makes your difficulties easy to do....You will understand the polynomial chapter easily by seeing this ....Thanks for watching this ..Please Share, Like and Subscribe the PPT
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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http://sandymillin.wordpress.com/iateflwebinar2024
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Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
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Model Attribute Check Company Auto PropertyCeline George
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The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
3. INDEX
• Expression
• Term, factors and coefficient
• Monomial, binomials and polynomials
• Like and unlike terms
• Addition and subtraction in algebra
• Multiplication in algebra
• What is an identity?
• Applying identities
4. Expression
• Numbers, symbols and operators (such as + and ×)
grouped together that show the value of
something.
Example: 2×3 is an expression
5. Terms, factors and coefficient
Terms :- In Algebra a term is either a single number or
variable, or numbers and variables multiplied
together.
Terms are separated by + or − signs
6. Factors :-Factors are numbers you can multiply together
to get another number:
Example: 2 and 3 are factors of 6, because 2 × 3 = 6. A
number can have MANY factors!
Example: What are the factors of 12?
3 and 4 are factors of 12, because 3 × 4 = 12.
Also 2 × 6 = 12 so 2 and 6 are also factors of 12.
And 1 × 12 = 12 so 1 and 12 are factors of 12 as well.
In Algebra, factors are what you can multiply together to
get an expression.
(x+3) and (x+1) are factors of x2 + 4x + 3:
7. • Coefficient :-A number used to multiply a variable.
Example: 6z means 6 times z, and "z" is a variable,
so 6 is a coefficient.
Sometimes a letter stands in for the number.
Example: In ax2 + bx + c, "x" is a variable, and
"a" and "b" are coefficients.
8. Monomial, binomial and polynomial
• Monomial :- A polynomial with just one term.
Example: 3x2
9. Binomial :- A polynomial with two terms.
Example: 3x2 + 2
Polynomial :-An expression that can have
constants, variables and exponents, that
can be combined using addition,
subtraction, multiplication and division,
but:
• no division by a variable.
• a variable's exponents can only be
0,1,2,3,... etc.
• it can't have an infinite number of terms.
10. Like and unlike terms
• Like terms:- "Like terms" are terms whose variables (and
their exponents such as the 2 in x2) are the same.In
other words, terms that are "like" each other.
• Note: the coefficients (the numbers you multiply by,
such as "5" in 5x) can be different.
Example:
7x + x -2x
Are all like terms because the variables are all x
Example:
(1/3)xy2-2xy2+6xy2
Are all like terms because the variables are all xy2
11. • Unlike terms :-if they are not like terms, they are
called "Unlike Terms":
12. Combining like terms
• You can add like terms together to make one term:
Example: 7x + x
They are both like terms, so you can just add them:
7x + x = 8x
• By the way ... why don't we write "1x" ?
It is just easier to write x. Imagine you were adding eggs:
• 7 eggs plus 1 egg is 8 eggs could be written 7 eggs + egg = 8 eggs
Example: 3x2 - 7 + 4x3 - x2 + 2
Some of the terms are like terms.
Combine like terms:
(3x2 - x2) + (4x3) + (2 - 7)
Then add like terms:
2x2 + 4x3 - 5
13. Addition and subtraction in algebra
• Addition of algebraic expressions :-
while adding algebraic expression we collect the
like terms and add them. The sum of several like
terms is the like terms whose coefficient is the sum
of the coefficient of these like terms.
example :-add: 6a+8b-5c and 2b+c-4a.
Answer:- collecting like terms
6a-4a+8b+2b-5c+c
:-> 2a+10b-4c
14. • Subtraction of algebraic expressions :-
steps for subtraction of algebraic expressions:-
i. arrange the terms of the given expression in the
same order.
ii. Write the given expressions in such a way that the
like terms occur one below the other, keeping the
subtracted in the second row.
iii. Change the sign of each term in the lower row
from+ to – and – to +
iv. With new signs of the terms of lower row, add
column wise
15. • Example :- subtract 4a+5b-3c from 6a- 3b+c
answer :-we have
6a-3b+c
+4a+5b-3c
- - +
2a-8b+4c
16. Multiplication and division in algebra
• Before taking up the product of algebraic
expressions. Let us look at 2 important rules
i. The product of 2 factors with the same signs is
positive and factors with different signs is
negative.
ii. If x is a variable and m and n are positive integers,
then (xᴹ × xᴺ)=x(ᴹ+ᴺ)
17. Multiplication of two monomials
• Rule :- product of 2 monomials
(product of their numerical coefficient)×(product
of their variable parts)
example :- find the product of
(6xy)×(-3xᶾyᶾ)
Answer:- (6×-3) × (xy × xᶾyᶾ)
= -18x⁴y⁴
18. Multiplication of a polynomial by a monomial
• Rule :-multiply each term of the polynomial by the
monomial, using the distributive law
a×(b+c)=a ×b+a ×c
Multiplication of two binomials