Calculate Square Area: Finding Expression for Side Length (a-b)

Question

Look at the following square:

Which expression represents its area?

00:00 Express the area of the square

00:03 The side length according to the given data

00:07 We'll use the formula for calculating the area of a square (side squared)

00:13 We'll substitute appropriate values and solve to find the area

00:21 And this is the solution to the problem

Remember that the area of the square is equal to the side of the square raised to the 2nd power.

Formula for the area of the square:

$A=L^2$

We substitute our values into the formula:

$A=(a-b)^2$

$(a-b)^2$