Answer:
![4x^6+12x^5+8x^4](https://tex.z-dn.net/?f=4x%5E6%2B12x%5E5%2B8x%5E4)
Step-by-step explanation:
To find the area of a triangle, you need to multiply the width by the height. In this case:
![(4x^3)(x^3+3x^2+2x)=\\4x^6+12x^5+8x^4](https://tex.z-dn.net/?f=%284x%5E3%29%28x%5E3%2B3x%5E2%2B2x%29%3D%5C%5C4x%5E6%2B12x%5E5%2B8x%5E4)
Hope this helps!
Most of those are correct but the ones that are not are, (15+8 divided by 4-6) as division comes first. 6x3-8 as multiplication comes before subtraction. And 2/3+4x2, multiplication comes before addition. So change those couple up and you got it.