8x 3 - 2x Using the identity: a 2 - b 2 = (a + b)(a - b) 8 x 3 - 2x = 2x(4 x 2 - 1) = 2x(2x - 1)(2x - 1)

8x 3 - 2x = ?

8x³ - 2x

Using the identity: a² - b² = (a + b)(a - b)

8 x³ - 2x

= 2x(4 x² - 1)

= 2x(2x - 1)(2x - 1)