Factoring Difference of Squares with a GCF

Which of the following methods would be best to solve this equation by Factoring?
25x² - 16 = 0

• Difference of Squares

• GCF

• I-Chart (when a =1)

• Factor by Grouping

Fully Factor the Following
25x²-81

• (5x-9)²

• (5x+9)(5x-9)

• 25(x-9)²

• (9x+5)(9x-5)

Is the polynomial a difference of squares and if it is factor the polynomial.

d² - 36

• Is not a difference of squares

• Is a difference of squares;

  (d + 6)(d - 6)

• Is a difference of squares; (d - 6)²

• Is a difference of squares;

  (d + 18)(d - 18)

3x² - 75

• 3( x + 5 ) ( x - 5 ) 

• Prime

• ( x + 5 ) ( x - 5 ) 

• 3( x - 5 ) ( x - 5 ) 

(a)  

• A

• B

• 
  C

• D

(a)  

• A

• B

• C

• D

Select ALL the quadratics that are a Difference of Squares

• 
• 
• 
• 
• 

What isn't this quadratic a

Difference of Squares?

• It's not a difference

• 36 is not a perfect square

• 1 is not a perfect square

• Silly goose, it is a difference of squares!

• x² is not a perfect square

• Steps for factoring a general trinomial

• Patterns for a perfect square trinomial

• Pattern for sum and difference of two squares

• GCF with Prime Factorization