The dimensions of a rectangle are shown. Write the area of the rectangle as a sum of cubes .

The correct answer is: Thus, the sum of cubes are of the form x^3 + 3^3.

ANSWER:
Hint:
where a and b can be real values, variables or multiples of both.
We are asked to write the area of the rectangle as the sum of cubes
Step 1 of 2:
The length of the rectangle is: x²- 3x + 9
The width of the rectangle is: (x + 3)
Thus, the area of the rectangle is:


Step 2 of 2:
Analyze the area of the rectangle, we get:

Thus, the sum of cubes are of the form x³ + 3³
Note:
The area of a rectangle with length l and width w is  A = lw.