Algebra I Fundamentals: Factoring Trinomials
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Questions and Answers

What is a trinomial?

  • four term polynomial
  • one term polynomial
  • three term polynomial (correct)
  • two term polynomial

What is a binomial?

  • one term polynomial
  • two term polynomial (correct)
  • three term polynomial
  • four term polynomial

What is a factor?

An integer that divides evenly into another; a polynomial that divides evenly into another; the process of writing a polynomial as a product of prime factors.

What is the middle term of the product of (x + 5)(x + 2)?

<p>7x</p> Signup and view all the answers

What is the middle term of the product of (x - 4)(x - 3)?

<p>-7x</p> Signup and view all the answers

What is the product of (n - 8)(n + 2)?

<p>n^2 - 6n - 16</p> Signup and view all the answers

What is the product of (-a + 3)(a + 4)?

<p>-a^2 - a + 12</p> Signup and view all the answers

Factor y^2 + 5y + 6.

<p>(y + 2)(y + 3)</p> Signup and view all the answers

Factor completely x^2 + 13x + 36.

<p>(x + 4)(x + 9)</p> Signup and view all the answers

Factor completely a^2 - a - 20.

<p>(a - 5)(a + 4)</p> Signup and view all the answers

Factor completely x^2 - 5x - 14.

<p>(x + 2)(x - 7)</p> Signup and view all the answers

Factor p^2 + 18p + 32.

<p>(p + 2)(p + 16)</p> Signup and view all the answers

Factor completely b^2 + 12b + 32.

<p>(b + 4)(b + 8)</p> Signup and view all the answers

Factor x^2 + 29x - 30.

<p>(x - 1)(x + 30)</p> Signup and view all the answers

A certain rectangle has an area of x^2 + 7x + 12. What are the length and width of the rectangle?

<p>l = x + 4; w = x + 3</p> Signup and view all the answers

Study Notes

Key Definitions

  • Trinomial: A polynomial consisting of three terms.
  • Binomial: A polynomial composed of two terms.
  • Factor: An integer or polynomial that divides another evenly; also refers to the process of expressing a polynomial as a product of its prime factors.

Middle Terms of Products

  • The middle term of the product of (x + 5)(x + 2) is 7x.
  • The middle term of the product of (x - 4)(x - 3) is -7x.

Products of Binomials

  • The product of (n - 8)(n + 2) results in n² - 6n - 16.
  • The product of (-a + 3)(a + 4) gives -a² - a + 12.

Factoring Trinomials

  • y² + 5y + 6 factors to (y + 2)(y + 3).
  • x² + 13x + 36 factors completely to (x + 4)(x + 9).
  • a² - a - 20 can be factored as (a - 5)(a + 4).
  • x² - 5x - 14 factors into (x + 2)(x - 7).
  • p² + 18p + 32 breaks down to (p + 2)(p + 16).
  • b² + 12b + 32 can be expressed as (b + 4)(b + 8).
  • x² + 29x - 30 factors to (x - 1)(x + 30).

Application to Geometry

  • For a rectangle with an area given by x² + 7x + 12, factor the trinomial to determine its dimensions: Length (l) is (x + 4) and Width (w) is (x + 3).

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Test your knowledge of key concepts in factoring trinomials with this flashcard quiz. Learn definitions of important terms such as trinomial and binomial, and practice identifying middle terms in polynomial products. Perfect for Algebra I students looking to strengthen their understanding of polynomials.

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