Answer:
6x² + 8x
Explanation:
First, look at the outer box. The area will be equal to (3x+2)(4x). For the inner box, the area will be equal (3x)(2x).
The shaded region is the area of the outer box minus the area of the inner box. In equation form, it is below. Simplify it so that it is in standard form
(3x + 2)(4x) - (3x)(2x)
(12x² + 8x) - (6x²)
6x² + 8x