Question

7(x2 + 2xy) - y2 - (x2 + 13xy)​

Answer 1

Ответ:

34|78°|√45) вот так

Объяснение:

учитесь

Answer 2

To simplify the expression 7(x^2 + 2xy) - y^2 - (x^2 + 13xy), you'll first distribute the 7 on the left side and then combine like terms:

1. Distribute the 7 on the left side:

   7(x^2 + 2xy) = 7x^2 + 14xy

2. Now, your expression becomes:

   7x^2 + 14xy - y^2 - (x^2 + 13xy)

3. Remove the parentheses by distributing the negative sign on the right side:

   7x^2 + 14xy - y^2 - x^2 - 13xy

4. Now, combine like terms:

   (7x^2 - x^2) + (14xy - 13xy) - y^2

5. Simplify further:

   6x^2 + xy - y^2

So, the simplified expression is 6x^2 + xy - y^2.