Grade 7 Algebraic Expressions and Identities Quiz
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Questions and Answers

Which of the following is the correct arrangement of the polynomial $3x^2 - 2x + 5$ in descending order?

  • $3x^2 + 5 - 2x$
  • $3x^2 - 2x + 5$ (correct)
  • $-2x + 5 + 3x^2$
  • $-2x + 3x^2 + 5$

    • What is the product of the sum of $a$ and $b$ squared?

  • $a^2 + 2ab + b^2$ (correct)
  • $a^2 + b^2$
  • $a^2 - b^2$
  • $a^2 - 2ab + b^2$

    • Which of the following is the correct result of multiplying the algebraic expression $(2x - 3)$ by $(x + 4)$?

  • $2x^2 + 5x + 12$
  • $2x^2 - 5x + 12$
  • $2x^2 - 5x - 12$
  • $2x^2 + 5x - 12$ (correct)

    • What is the result of multiplying the algebraic expression $(3x - 4)$ by $(2x + 5)$?

    <p>$6x^2 + 7x - 20$</p> Signup and view all the answers

    Which of the following is the correct algebraic identity for the square of the sum of two terms?

    <p>$(a + b)^2 = a^2 + 2ab + b^2$</p> Signup and view all the answers

    What is the correct arrangement of the polynomial $4x^3 - 2x^2 + 3x - 1$ in descending order?

    <p>$4x^3 - 2x^2 + 3x - 1$</p> Signup and view all the answers

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