if x=4 y=-3, and z=2, evaluate xy^2z

Sure, let's evaluate the expression step by step.

1. Substitute the given values into the expression. So, xy^2z becomes 4*(-3)^2*2.
2. Calculate the square of -3, which is 9. So, the expression becomes 492.
3. Multiply 4 and 9, which is 36. So, the expression becomes 36*2.
4. Finally, multiply 36 and 2, which is 72.

So, the value of the expression xy^2z when x=4, y=-3, and z=2 is 72.