Multiplying the Difference of Squares Polynomials

• Square of a binomial

• Difference of squares

• FOIL

• Expanded form

Completely factor the polynomial expression 4x² - 25y².

• (5x - 2y)(5x + 2y)

• (2x - 5y)(2x + 5y)

• (xy - 5)(xy + 2)

• (xy + 5)(xy -2)

(a² - b²) = (a + b)(a - b) is an example of what factoring technique?

What method should you use to factor the polynomial?

• Factor by Grouping

• Factor out the GCF

• Difference of Squares

• Difference of 2 Cubes

(x - 8)(x + 8) * The product of these 2 binomials is called a difference of squares

• x² + 8x - 64

• x² - 8x + 64

• x² - 64

• x² + 64

(x - 7)(x + 7)

• x² + 7x - 49

• x² - 7x + 49

• x² - 49

• x² + 49

Multiply:
(r + 7)(r − 7)

• r ² − 49 

• r ² + 14

• r ² − 7r + 49 

4x² - 25

• (2x + 5) (2x - 5)

• (2x - 5)²

• (2x + 5)²

• 2x + 5(2x - 5)

x² - 400

• ( x - 200) ( x + 200) 

• ( x + 20) ( x + 20) 

• Prime

• ( x - 20) ( x + 20) 

(a+b)(a-b)

• none of these