Find 3x^2 - y^3 - y^3 - z if x = 3, y = -2, and z = -5. explain, you!

To solve a problem where we already know the value of the variables, we should simply substitute in the value of the variable for every instance of the variable, and then solve like a normal math problem.



Using the math above, we can see that the value of this expression is 22.