The shaded region is composed of four smaller regions. b- b (a) Write an expression for the area of the shaded region as the area of a A=(a+b)2 A 2 (a+b) A-4-a-b A-2-(a - b) OA-(a - b)2 (b) Write an expression for the area of the shaded region as the sum of A a+ab+ba + b A ab+ab+ba + ba A a+b+a+b A = (a + b) + ab + ba + (a + b) A = a+a+b+b (c) Evaluate each expression for the area of the shaded region when part (a) expression art (b) expression