Lesson 5. Algebraic Expressions | Maths Session for Grade 09

About DP Education
The DP education was born out of the passion of Mr. Dhammika Perera to provide an innovative online math learning platform for school students to enhance their math skills. School students can access the government math curriculum from grades 6-13 at their own convenience for free.

DP Education (in English)
Students who wish to learn Math can watch the video and learn the subject at their convenience. Here math is taught in an easy way and in simple language.
You can also watch and learn math in Sinhala and Tamil languages by clicking to the links below.

CHAPTER DESCRIPTION (in this video)

This video is a lesson on Algebraic Expressions - Grade 9.
By studying this lesson you will be able to
• find the value of simple algebraic expressions by substituting directed numbers,
• expand the product of two binomial expressions of the form (x ± a) (x ± b),
• verify the expansion of the product of two binomial expressions by considering areas.

Maths can not be learnt if you leave in between the class. So, we have provided break in between our online class at regular intervals.

Please go through the previous chapter on Fractions here

Please go through the next chapter on Factors of the Algebraic Expressions here

You can ask your doubts and any questions related to this chapter in the message section below, and our teacher will reply back at the earliest. Also, do attend our live QnA Sessions, which are conducted from time to time, and we post the announcement on our social media platforms.

The link is given below:-

You can also visit Mr. Dhamikka Perera's Youtube channel to know more about his vision on DP Education and the initiative at

For our graduate, postgraduate and upskilling students, we also provide a large number of free courses from various prestigious universities across the world through our website:

Our Motto is "Learn what you love" and we will work hard to make learning enjoyable for you.

#DPEducation #Grade9MathsEnglish #Algebra

[nightmare_]

guy!! idk ab yall but i find this video very slow (the teacher is great!! not complaining) so i increase the playback speed to 2x or lower... the ones who dont knw, try it...

[shineinternationalschool]

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[sithikakehansstudio]

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[btn]

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And the lessons are very interesting mam.

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[SpeedofMusic]

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[suthasutha]

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[kittyakahiro]

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[chegeecreations]

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[ferdinatfernandopulle]

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