Can someone please help me with this problem! And can someone please explain how they got this answer and why its right! I would appreciate it, so much thank you so much!

Can someone please help me with this problem And can someone please explain how they got this answer and why its right I would appreciate it so much thank you s class=

Respuesta :

Answer:

2x^2 + 8x - 24

Step-by-step explanation:

The formula for a trpezoid is (b1+b2)*h/2. If you substitute with the given domensions, you get

((2x + 12 + 4)*2x-4)/2

Simplify

((2x+16)*2x-4)/2

(4x^2+16x-48)/2

2x^2 + 8x - 24