Factoring Trinomials using the X Method

Factoring Trinomials using the "X" Method

CCSS.MATH.CONTENT.HSA.SSE.B.3.A

Multiple Choice

Review: What is the general trinomial equation?

• $y=x^2-x+a$

• $y=ax^2-bx+c$

• $y=ax^2+bx+c$

• $y=x^2+x+a$

Multiple Choice

Review: What is the definition of a factor?

• numbers/equations that can be multiplied together to get a product

• the answer of two or more numbers/equations being multiplied together

Multiple Select

Check off all the factors of the equation:

 $\left(x+1\right)\left(x+2\right)=x^2+3x+2$  

• (x+1)

• (x+2)

•  $x^2+3x+2$  

• none of the above

Our Purpose for Factoring

• finding the x-intercepts (roots or zeros)

Zero Product Property

If a x b=0, then a=0, b=0, or a=b=0

This is the property that makes factoring possible.

Factoring using the X Method

The top sections is for the product of a and c. The bottom section is for b. The two side sections are for two numbers that add to "b" but multiply to "a x c".

Let's try an example...

Let's continue with that example and find the x-intercepts...

Now complete the Quizizz at:

quizizz.com/join?gc=48878384