Difference of Squares

Practice Problems

Try these practice problems. Work the problem on another piece of paper, then select the correct choice.

1.) Factor x²-1.

(x + 1)(x + 1)
(x + 1)(x - 1)
(x - 1)(x - 1)
(x - 2)(x + 1)

2.) Factor 25x² - 4

(5x - 2)(5x - 2)
(5x + 2)(5x + 2)
(25x + 4)(x - 1)
(5x + 2)(5x - 2)

3.) Factor 4x² - 9y²

(2x + 3y)(2x + 3y)
(2x + 3y)(2x - 3y)
(2x - 3y)(2x - 3y)
(4x + 1y)(x - 9y)

When you are finished, click "next" to read about prime polynomials.

 

Created by Kelvin Leeds     7/25/03