Question

Factiorise the following
1. 4x² – gy²​

Answer 1

Step-by-step explanation:

1. (2x)² - (g½y) ²
2. (2x + g½y) (2x - g½y)

Answer 2

Answer:

(2x + 3y)(2x - 3y)

Step-by-step explanation:

Given: 4x² - 9y²

We can write this as :

→ (2x)² - (3y)²

Identity : a² + b² = (a + b)(a - b)

Here, a = 2x, b = 3y

→ (2x + 3y)(2x - 3y)