State the number ofterms in the expressionl Xr - 2F + 5X - l/x - I
A.2 B.4 c.5 D. 1
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Answer:
Mathematics NCERT Grade 7, Chapter 12: Algebraic Expressions- The chapters discuss concepts related to algebraic expressions.
After a short introduction, the first section discusses How are expressions formed?
Algebraic expressions are formed from variables and constants.
This is followed by the topics terms, factors, and coefficients.
Expressions are made up of terms.
A term is a product of factors.
Coefficient is the numerical factor in the term
Before moving to terms like monomials, binomials, and polynomials, like and unlike terms are discussed.
When terms have the same algebraic factors, they are like terms.
When terms have different algebraic factors, they are unlike terms.
Any expression with one or more terms is called a polynomial.
A one-term expression is called a monomial.
A two-term expression is called binomial.
An expression that contains three terms is called a trinomial.
Emphasis is given to important topics like the Addition and Subtraction of Algebraic Expressions.
2 sub parts are discussed in the following section: