Answer:

Step-by-step explanation:
Given
Shape: Cube
Dimension: (x+7y), (7x-y) and (xy-5).
Required
Determine the volume
The volume is calculated by multiplying the dimensions:

Evaluate the first 2 brackets
![Volume = [x(7x-y)+7y(7x-y)] * (xy-5)](https://tex.z-dn.net/?f=Volume%20%3D%20%5Bx%287x-y%29%2B7y%287x-y%29%5D%20%2A%20%28xy-5%29)
![Volume = [(7x^2-xy)+(49xy-7y^2)] * (xy-5)](https://tex.z-dn.net/?f=Volume%20%3D%20%5B%287x%5E2-xy%29%2B%2849xy-7y%5E2%29%5D%20%2A%20%28xy-5%29)
![Volume = [7x^2-xy+49xy-7y^2] * (xy-5)](https://tex.z-dn.net/?f=Volume%20%3D%20%5B7x%5E2-xy%2B49xy-7y%5E2%5D%20%2A%20%28xy-5%29)
![Volume = [7x^2+48xy-7y^2] * (xy-5)](https://tex.z-dn.net/?f=Volume%20%3D%20%5B7x%5E2%2B48xy-7y%5E2%5D%20%2A%20%28xy-5%29)
Open brackets
![Volume = xy[7x^2+48xy-7y^2] -5[7x^2+48xy-7y^2]](https://tex.z-dn.net/?f=Volume%20%3D%20xy%5B7x%5E2%2B48xy-7y%5E2%5D%20-5%5B7x%5E2%2B48xy-7y%5E2%5D)

Answer:
- Please see the attached picture for full solution!:)
------------------ HappY LearninG<3 -------------
14x is the slope meaning it goes up 14 and over 1