Question

Evaluate the following expression using the values given:

Find x3 − 2y2 − 3x3 + z4 if x = 3, y = 5, and z = −3.

Answer 1

The result of this question is -23

Answer 2

The solution is
`-23`

Explanation:

We need to solve the expression
`x^(3)-2y^(2)-3x^(3)+z^(4)` at
`x=3,y=5, \text{and} \ z=-3`

Replace 'x' with 3, 'y' with 5 and 'z' with -3 in
`x^(3)-2y^(2)-3x^(3)+z^(4)`

`3^(3)-2(5)^(2)-3(3)^(3)+(-3)^(4)`

`27-2(25)-3(27)+81`

`27-50-81+81`

`-23`

Therefore, the solution is
`-23`