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NCERT Class 9 Mathematics Question Paper

6 Questions

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NCERT Class 9 Mathematics Question Paper

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Questions and Answers

What is the value of $3(4 + 5)$?

Simplify the expression $2x^2 - 5x + 3$ when $x = 2$.

What is the value of the expression $4y^2 + 7y - 10$ when $y = -2$?

Explain the concept of factorization and provide an example.

Factorization is the process of expressing a polynomial as the product of linear factors. For example, factorize the expression $x^2 - 5x + 6$ as $(x-2)(x-3)$. Signup and view all the answers

What is the difference between an algebraic expression and an algebraic equation? Provide an example of each.

An algebraic expression is a combination of constants, variables, and operations, while an algebraic equation is a statement that two algebraic expressions are equal. Example of an expression: $3x^2 - 2x + 5$. Example of an equation: $2x^2 - 7x + 3 = 0$. Signup and view all the answers

Explain the concept of simultaneous linear equations and how they can be solved. Provide an example of a pair of simultaneous linear equations.

Simultaneous linear equations are a set of two or more linear equations that are to be solved together. They can be solved using the substitution method or the elimination method. Example of simultaneous linear equations: $2x + 3y = 8$ and $4x - 5y = 7$. Signup and view all the answers