The answer is x= -10. To get this answer you have to simplify both sides of the equation, distribute, and combine the like terms. The second step is to add 15/2x to both sides. Step 3 is to subtract 72 from both sides, then divide both sides by 3
Because the value of x is raised to the power of 3, x^3 is a cubed number.
and 64 is 4^3
This makes the polynomial a sum of cubes.
Here is the graph if u need coordinates let me know