Answer:
3x² + [tex]\frac{3}{2}[/tex]x - [tex]\frac{3}{2}[/tex]
Step-by-step explanation:
1/2bh
1/2(x-9+x+8)(3x+3)
1/2(2x-1)(3x+3)
1/2(6x²+6x-3x-3)
