Math Problem Statement

What's New Let Go and Be Unique! Complete the table below. In each item, a pair of polynomial is given. The third colu the factored form of each polynomial, the fourth column or the Let Go column is the fac common to each pair of polynomials, and the last column or the Be Unique column is the fac not common to each pair of polynomials. Write your answer on a separate sheet of paper. first item is done to serve as an example, you may start in the second item. Item Given Factored Form Let Go Be Unique No. x2+x-6 (x-2)(x+3) x-2 1. x+3 x2-9 (x-3)(x+3) x-3 15a 2. 12a2b 3x2-12x 3. 6x2+3x x2+4x+3 4. x2-3x-4 2x2+11x+5 5. x2+6x+5 Guide Questions:

  1. What techniques did you use to identify the factors of the given polynomials? 2. If you are going to write the remaining factors in the Be Unique column as radio not? expressions, are these rational expressions in simplest form? Why or why

Solution

Let's work through the table and complete the missing columns.

Table Completion:

  1. Given:
    x2+x6x^2 + x - 6 and x29x^2 - 9
    Factored Form:
    (x2)(x+3)(x - 2)(x + 3) and (x3)(x+3)(x - 3)(x + 3)
    Let Go:
    x+3x + 3
    Be Unique:
    x2x - 2 and x3x - 3

  2. Given:
    15a15a and 12a2b12a^2b
    Factored Form:
    15a=3×5×a15a = 3 \times 5 \times a
    12a2b=3×4×a×ab12a^2b = 3 \times 4 \times a \times ab
    Let Go:
    3a3a
    Be Unique:
    55 and 4ab4ab

  3. Given:
    3x212x3x^2 - 12x and 6x2+3x6x^2 + 3x
    Factored Form:
    3x(x4)3x(x - 4) and 3x(2x+1)3x(2x + 1)
    Let Go:
    3x3x
    Be Unique:
    x4x - 4 and 2x+12x + 1

  4. Given:
    x2+4x+3x^2 + 4x + 3 and x23x4x^2 - 3x - 4
    Factored Form:
    (x+1)(x+3)(x + 1)(x + 3) and (x4)(x+1)(x - 4)(x + 1)
    Let Go:
    x+1x + 1
    Be Unique:
    x+3x + 3 and x4x - 4

  5. Given:
    2x2+11x+52x^2 + 11x + 5 and x2+6x+5x^2 + 6x + 5
    Factored Form:
    (2x+1)(x+5)(2x + 1)(x + 5) and (x+1)(x+5)(x + 1)(x + 5)
    Let Go:
    x+5x + 5
    Be Unique:
    2x+12x + 1 and x+1x + 1

Guide Questions:

  1. What techniques did you use to identify the factors of the given polynomials?

    • Factoring techniques, including finding the greatest common factor (GCF), factoring by grouping, and using formulas like the difference of squares or the quadratic formula.
  2. If you are going to write the remaining factors in the Be Unique column as rational expressions, are these rational expressions in simplest form? Why or why not?

    • Yes, the remaining factors are in their simplest form since they have no common factors other than 1. Simplifying further wouldn't be possible.

Relative Questions:

  1. What is the significance of finding the "Let Go" factors in such problems?
  2. How does factoring relate to solving quadratic equations?
  3. What are the differences between factoring simple quadratics and more complex polynomials?
  4. Why is it important to ensure that expressions are in their simplest form when factoring?
  5. Can you apply these factoring techniques to polynomials with more than two terms?

Tip:

When factoring, always check for the greatest common factor (GCF) first—it can simplify the process significantly.

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Math Problem Analysis

Mathematical Concepts

Polynomial Factoring
Quadratic Equations

Formulas

Difference of Squares
Factoring by Grouping

Theorems

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Suitable Grade Level

Grades 7-9