Factories: 4x 2

We have, 4x 2 – 9y 2 = (2x) 2 – (3y) 2 By using the formula a 2 – b 2 = (a + b)(a – b) We get, 4x 2 – 9y 2 = (2x) 2 – (3y) 2 = (2x + 3y)(2x – 3y)

We have,

4x² – 9y²

= (2x)² – (3y)²

By using the formula a² – b² = (a + b)(a – b)

We get,

4x² – 9y² = (2x)² – (3y)²

= (2x + 3y)(2x – 3y)