Sagot :
Answer:
- 3x² - 2x - 16
Step-by-step explanation:
Shaded region is the difference of the areas of the rectangles
Area of the bigger rectangle:
- A = 2x(2x + 4) = 4x + 8x
Area of the smaller rectangle:
- A = (x + 2)(x + 8) = x² + 10x + 16
Area of shaded region:
- A = 4x² + 8x - x² - 10x - 16 = 3x² - 2x - 16