Answer:
4. 2(x - y)
Explanation:
We are required to find a mathematical expression for the statement: Twice the difference of two numbers.
Begin by picking two variables to represent the numbers.
Let the two numbers be x and y.
The difference between any two numbers is the subtraction of one from the other.
[tex]\text{The difference=x-y}[/tex]The word twice means to multiply by 2. Therefore:
[tex]\text{Twice the difference}=2(x-y)[/tex]The required expression is 2(x-y).
Option 4 is correct.
