Question

70.) 1) 5(x - y)?;2) 3(x + y)?; 3) (5x - y)?; 4) (3x + y).​

Answer 1

1) 5х-5у
2)3х+3у
3)5х-у
4)3х+у

Answer 2

It looks like you've provided four algebraic expressions, each with some form of variables. It seems you might want me to simplify these expressions. If that's the case, I'd be happy to help! Let's simplify each expression:

1. 5(x - y): This expression can be simplified by applying the distributive property (also known as the distributive law or the distributive property of multiplication over addition/subtraction):

   5(x - y) = 5x - 5y

2. 3(x + y): Similarly, applying the distributive property to this expression:

   3(x + y) = 3x + 3y

3. (5x - y): This expression is already in its simplest form, as it doesn't have any common factors that can be further simplified.

4. (3x + y): This expression is also already in its simplest form.

So, after simplifying each expression, we have:

1. 5(x - y) = 5x - 5y
2. 3(x + y) = 3x + 3y
3. (5x - y) = 5x - y
4. (3x + y) = 3x + y

If you meant something different with these expressions, please provide more context or clarify your question!