Perimeter of a Rectangle: Express using

To solve this problem, we need to find the perimeter of a rectangle with given dimensions. The formula for the perimeter $P$ is:

$P = 2(\text{length} + \text{width})$

In this problem, we are given:

• Length $= X$
• Width $= X - 2$

Using the perimeter formula, we substitute the given values:

$P = 2(X + (X - 2))$

First, simplify the expression within the parentheses:

$X + (X - 2) = X + X - 2 = 2X - 2$

Now substitute back to find the perimeter:

$P = 2(2X - 2)$

Distribute the 2 to both terms inside the parentheses:

$P = 4X - 4$

Therefore, the perimeter of the rectangle is $4X - 4$.

The correct choice corresponding to this calculation is: $4X - 4$.