Answer:
3/2x²+28x+130
Step-by-step explanation:
Area of shaded region = Area of rectangle – Area of triangle
Area of rectangle:
[tex](2x + 15)(x + 10) = \\2x {}^{2} + 35x + 150[/tex]
Area of triangle:
[tex] \frac{1}{2 } \times (x + 4)(x + 10) = \\ \frac{1}{2} x {}^{2} + 7x + 20[/tex]
then subtract
