Question

(a-1 – 2). (a-1 + 2)​

Answer 1

Ответ:а^2-2а-3

Объяснение:(а-3)(а+1)=а^2+а-3а-3=а^2-2а-3

Answer 2

It seems like you've provided a mathematical expression:

(a - 1 – 2) * (a - 1 + 2)

Let's simplify it step by step:

1. Distribute the first term: (a - 1) * (a - 1) - 2 * (a - 1 + 2)

2. Apply the distributive property to the second term: (a^2 - a - a + 1) - 2 * (a + 1)

3. Simplify the terms inside parentheses: (a^2 - 2a + 1) - 2 * (a + 1)

4. Distribute the -2: a^2 - 2a + 1 - 2a - 2

5. Combine like terms: a^2 - 4a - 1

So, the simplified expression is: a^2 - 4a - 1