Find x to the 3 power - 2y to the 2 power -3z to the 3 power + z to the 4 power if z = 3, y = 5, and z = -3
I'm assuming there's an error here, where it says :- z = 3, y = 5, and z = -3
Since you have two values for z and none for x then I'm going to take the 1st value for z as the actual value for x, So your question should read as,
Find x to the 3 power - 2y to the 2 power -3z to the 3 power + z to the 4 power if x = 3, y = 5, and z = -3
Rewriting x to the 3 power - 2y to the 2 power -3z to the 3 power + z to the 4 power as x^3 - 2y^2 - 3z^3+ z^4,
Substituting for x = 3, y = 5, and z = -3 into x^3 - 2y^2 - 3z^3+ z^4, we get
3^3 - 2(5)^2 - 3(-3)^3 + (-3)^4
27 - 2(25) - 3(-27) + (9)^2
27 - 50 + 81 + 81
27 + 162 - 50
27 + 112
139
Answer: 139