Question

1. 4-y² 2. b²- c² 3. 1/25 - a² 4. 4a² - 25 5. 25x² - y²

Answer 1

Решение задания смотри на фотографии

Answer 2

Let's simplify the given expressions:

1. 4 - y²: This expression cannot be simplified further unless you have additional information about the value of 'y.'

2. b² - c²: This expression is a difference of squares and can be factored as (b + c)(b - c).

3. 1/25 - a²: To simplify this expression, we need to find a common denominator. The common denominator is 25, so we can rewrite 1/25 as (1/25)(25/25) = 25/625. Now we can subtract a² to get (25/625) - (a²) = (25 - 625a²)/625.

4. 4a² - 25: This expression is also a difference of squares and can be factored as (2a + 5)(2a - 5).

5. 25x² - y²: This expression cannot be further simplified unless you have additional information about the values of 'x' and 'y.'

Please note that the simplifications provided above assume that the variables involved can take any real values unless specified otherwise.