Question

2(3a²-b²)-(3a-2b)(2a+b)

Answer 1

= 6а²-2в²-6а²+4ав-3ав+2в²=ав
выделенное сократили

Answer 2

1.6а^2-2b^2-(6a^2+3ab-4ab-2b^2)
=6a^2-2b^2-6a^2+ab+2b^2=ab.

Answer 3

To simplify the expression 2(3a² - b²) - (3a - 2b)(2a + b), you can follow these steps:

1. Start by expanding the expressions inside the parentheses:

2(3a² - b²) = 6a² - 2b² (3a - 2b)(2a + b) = 6a² + 3ab - 4ab - 2b²

2. Now, subtract the second expression from the first one:

(6a² - 2b²) - (6a² + 3ab - 4ab - 2b²)

3. Distribute the negative sign through the second expression:

6a² - 2b² - 6a² - 3ab + 4ab + 2b²

4. Group like terms and simplify:

(6a² - 6a²) + (-2b² + 2b²) + (-3ab + 4ab)

5. The first two terms (6a² - 6a²) and (-2b² + 2b²) both cancel out, leaving you with:

-3ab + 4ab

6. Combine the like terms:

-3ab + 4ab = 1ab or ab

So, the simplified expression is ab.