Calculate Square Area: Finding Area When Side Length is X-7

Question

Look at the square below:

Express its area in terms of $x$ .

00:00 Express the area of the square

00:03 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

00:23 And this is the solution to the question

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

The formula for the area of the square is

$A=L^2$

We place the data in the formula:

$A=(x-7)^2$

$(x-7)^2$