Chapter 8.3, Problem 56E

a.

To determine

To find: The area of the square marked (1).

b.

To determine

To find: The area of the rectangle marked (2).

c.

To determine

To find: The area of the rectangle marked (3).

d.

To determine

To find: The area of the square marked (4).

e.

To determine

To write: The formula for the expansion of ${\left(a+b\right)}^2$ by adding the four area obtained in parts (a) through (d).