Algebra Class 10
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Questions and Answers

Which mathematical expression represents the sum of 7 and 5 multiplied by 9?

  • $7 + 9(5)$
  • $9(7) + 9(5)$
  • $9(7 + 5)$ (correct)
  • $9(7 + 5)$ (correct)
  • What is the result of $8(4 - 2) + 10$?

  • $22$
  • $20$
  • $28$
  • $26$ (correct)
  • If $x = 3$, what is the value of the expression $2x^2 + 4x - 6$?

  • $10$ (correct)
  • $14$
  • $12$
  • $8$
  • What does the expression $5(a + b) - 3b$ simplify to?

    <p>$5a + 2b$</p> Signup and view all the answers

    Which of the following is the correct factorization of $x^2 - 9$?

    <p>$(x - 3)(x + 3)$</p> Signup and view all the answers

    Study Notes

    Mathematical Expressions

    • The sum of 7 and 5 multiplied by 9 is represented by the expression: (7 + 5) * 9.
    • The result of 8(4 - 2) + 10 is 26.
    • The value of the expression $2x^2 + 4x - 6$ when $x = 3$ is 24.
    • The expression $5(a + b) - 3b$ simplifies to 5a + 2b.
    • The correct factorization of $x^2 - 9$ is (x + 3)(x - 3). This follows the difference of squares pattern: a² - b² = (a + b)(a - b).

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    Description

    Test your understanding of algebraic expressions with this quiz. You'll solve various problems involving sums, products, and simplifications. Perfect for reinforcing key algebra concepts taught in the 10th-grade curriculum.

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