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Knowledge
The chapter covers algebraic expressions and their manipulation, focusing on addition, subtraction, multiplication, and the use of identities. Key methodologies such as the distributive law, combining like terms, and finding areas and volumes through algebraic expressions are discussed. By understanding the fundamentals of algebraic expressions, students can efficiently address mathematical problems involving variables and constants.
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Sections
References
NCERT Study MaterialClass Notes
Memorization
What we have learnt
- Expressions are formed from...
- Like terms can be combined ...
- Multiplying monomials and p...
Final Test
Revision Tests
Chapter FAQs
What we have learnt
- Expressions are formed from variables and constants.
- Like terms can be combined during addition or subtraction of expressions.
- Multiplying monomials and polynomials involves systematic application of distributive laws.
Key Concepts
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Term: Algebraic Expression
Definition: An expression formed by combining variables, constants, and operations.
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Term: Monomial
Definition: An algebraic expression that contains only one term.
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Term: Polynomial
Definition: An algebraic expression formed by adding or subtracting one or more monomials.
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Term: Distributive Law
Definition: A fundamental property that allows multiplication of a single term across terms in a parenthesis.
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Term: Like Terms
Definition: Terms that contain the same variable raised to the same power.