Question

Please answer a little quiet

IT is urgent

.Factorize: 4(x-y)^2 -9
.Evaluate : 1001×99​

Answer 1

1. (2x - 2y)² - 9

2. 99099

Explanation:

We know the a+b formula :

(a-b)² = a² - 2ab + b²

1. 4(x-y)^2 -9

4(x² - 2xy + y²) - 9

4x² - 8xy + 4y² - 9

(2x - 2y)² - 9

2. 1001 × 99​

= 99099

1001

× 99 ----------

9009

9009× ----------- 99099