Difference of the Squares

Factor 49n² - 25

• (7n - 5) (7n - 5)

• (3n + 5) (3n - 5)

• (7n + 5) (7n - 5)

• (5n + 7) (5n - 7)

Factor 4y² – 9.

• (2y + 3) (2y – 3)

• (4y + 3) (4y - 3)

• (2y + 3) (2y + 3)

• (2y – 3) (2y – 3)

Factor x² - 144

• (x - 12) ²

• (x - 12) (x - 12)

• (x + 12) (x + 12)

• (x + 12) (x - 12)

Factor y² - 196

• (y - 14) (y - 14)

• (y + 14) (y - 14)

• (y + 13) (y - 13)

• (y - 13) ²

Factor 121x² - 49

• (11x - 7) ²

• (11x - 7) (11x - 7)

• (11x + 7) (11x - 7)

• (12x + 7) (12x - 7)

Factor 64x² - 49y²

• (8x + 7) (8x - 7)

• (8x - 7y) (8x - 7y)

• (8x + 7y) (8x - 7y)

• (8x - 7y)²

Factor 225x² - 169y²

• (15x - 13y)²

• (15x + 13) (15x - 13)

• (25x + 13y) (25x - 13y)

• (15x + 13y) (15x - 13y)

Factor 25x² - 36y²

• (5x² + 6y²) (5x² - 6y²)

• (5x + 6y) (5x - 6y)

• (5x + 6y)²

• (5x - 6y)²

Factor 25x² - 81.

• (5x² - 9²)²

• (5x + 9) (5x + 9)

• (5x + 9) (5x - 9)

• (5x - 9) (5x - 9)

Which of the following cannot be factored using the difference of squares?

• 4x² - 121

• 16 - 25x²

• m² - n²

• 36x² - 54