3 years ago

Please answer a little quietIT is urgent.Factorize: 4(x-y)^2 -9 .Evaluate : 1001×99

Mathematics

1 answer:

Zarrin [17]3 years ago

3 0

Answer:

1. (2x - 2y)² - 9

2. 99099

Step-by-step 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

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Please answer a little quietIT is urgent.Factorize: 4(x-y)^2 -9 .Evaluate : 1001×99​

Please answer a little quietIT is urgent.Factorize: 4(x-y)^2 -9 .Evaluate : 1001×99