Factoring X-Game

Factoring X-Game

Write this down, and use a calculator when needed!

What is the pattern you notice?

Open Ended

What pattern do you notice?

To factor, you must:

Complete the X first by finding the left and right numbers that MULTIPLY to be the top number and ADD to be the bottom number.

Let's Practice!

Multiple Select

What are the TWO missing numbers?

• -7

• 7

• 3

• -3

(-7)(3) = -21 (top) and -7 + 3 = -4 (bottom)

Order doesn't matter.

The left and right are interchangeable.

SIGNS matter! (+/-)

The top must equal the product and the bottom must equal the sum.

Practice #2

Multiple Select

What are the TWO missing numbers?

• 8

• 7

• 3

• 5

 $\left(8\right)\left(7\right)=56$ (top) and 8+7 =15 (bottom)

Practice #3

Multiple Select

What are the TWO missing numbers?

• 2

• 4

• -4

• -2

 $\left(-4\right)\left(-2\right)=8$  and  $\left(-4\right)+\left(-2\right)=-6$  

Practice #4

Multiple Select

What are the TWO missing numbers?

• 8

• -3

• 3

• -8

 $\left(-3\right)\left(8\right)=-24$  and -3 + 8 = 5

Last one!

Multiple Select

What are the TWO missing numbers?

• 5

• -5

• 4

• -4

 $\left(-5\right)\left(-4\right)=20$  and  $\left(-5\right)+\left(-4\right)=-9$  

The X-game is one of the most important steps in factoring.

Be sure to practice, do your HW, and come to AA if you need help!