Factoring Polynomials by Grouping Techniques

The video tutorial explains how to factor polynomials by grouping, using a story about Grunkle, an architect in Goblinville. Grunkle needs help simplifying his blueprint, which involves factoring the polynomial x2 + 3x + 2x + 6. The tutorial demonstrates how to identify common factors in the polynomial terms and rewrite it as (x + 2)(x + 3). The process is broken down into clear steps, making it easy to follow and understand. The video concludes with a humorous note about finding the value of x.

What is the initial expression for the area of Grunkle's hovel floor?

• x^2 + 5x + 6

• x^2 + 3x + 2x + 6

• 2x^2 + 3x + 3

• x^2 + 6x + 9

Which terms share a common factor of x?

• 3x and 2x

• x^2 and 3x

• 2x and 6

• x^2 and 6

Tags

CCSS.7.EE.A.1

What common factor do the last two terms of the polynomial share?

• 6

• 2

• x

• 3

After factoring by grouping, what is the simplified form of the polynomial?

• (x + 3)(x + 4)

• (x + 2)(x + 2)

• (x + 3)(x + 3)

• (x + 2)(x + 3)

What humorous element is used to describe the unknown value of x?

• The length of a ferocious jungle jabberwocky

• The color of a mystical dragon

• The height of a giant troll

• The weight of a magical unicorn

Tags

CCSS.6.EE.B.6