Quadratic Binomial by Factoring GCF

Factor.

3x² + 21x + 36

• 3(x + 3)(x + 4)

• (3x + 4)(x + 3)

• (3x + 6)(x + 6)

• 3(x + 7)(x + 12)

Which is another way of correctly expressing (x - 3)(x - 3) ?

• (x + 3)(x + 3)

• (3 - x)(3 - x)

• 2(x - 3)

• (x - 3)²

Tags

CCSS.HSA.APR.C.4

Factor 12x² - 2xy - 4y²

• Take out the GCF

• Factor the rest by any method (x-game, slide & divide and magic square). Final answer should contain the GCF

What is the first question you ask yourself when factoring a polynomial? 

• How many terms does it have? 

• Is there a GCF? 

• What strategy should I use? 

• Why do I have to learn this?!?!?!

Factor by GCF:
10x² + 15x - 5

• 25(10x³+45x-15)

• 5(2x³ + 3x²-x)

• x(10x³+15x-5)

• 5(2x²+3x-1)

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x

• Solve for x

• FOIL

• Set each binomial factor equal to zero

Tags

CCSS.HSA-REI.B.4B

Which method would be most efficient for solving the equation?

• factoring

• completing the square

• graphing

• quadratic formula

Tags

CCSS.HSA-REI.B.4B

Factor Completely:
3x² + 18x +15
Hint: Factor GCF first.

• 3(x² + 6x + 5)

• (x + 5)(x + 1)

• 3(x + 5)(x + 1)

• Prime

Factor
k² - 2k - 24

• (k+4)(k-6)

• (k+4)(k+6)

• (k+6)(k-1)

• (k-4)(k+6)

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Tags

CCSS.HSF-IF.C.7A