Given Polynomial: 5x - 4x^3

We need to find the value of the polynomial at three different values of x: x = 0, x = -1, and x = 2.

(i) At x = 0:
To find the value of the polynomial at x = 0, we substitute x = 0 into the polynomial expression and simplify:
5(0) - 4(0)^3
= 0 - 4(0)
= 0

Therefore, when x = 0, the value of the polynomial is 0.

(ii) At x = -1:
To find the value of the polynomial at x = -1, we substitute x = -1 into the polynomial expression and simplify:
5(-1) - 4(-1)^3
= -5 - 4(-1)
= -5 + 4
= -1

Therefore, when x = -1, the value of the polynomial is -1.

(iii) At x = 2:
To find the value of the polynomial at x = 2, we substitute x = 2 into the polynomial expression and simplify:
5(2) - 4(2)^3
= 10 - 4(8)
= 10 - 32
= -22

Therefore, when x = 2, the value of the polynomial is -22.

Summary:
The value of the polynomial 5x - 4x^3 at different values of x are as follows:
(i) At x = 0: 0
(ii) At x = -1: -1
(iii) At x = 2: -22

1 . x=0
= 5×0-4×0×3
= 3
2 . x-1
=5×-1 -4×-1×3
=-5-4×3
=-9×3
=-27

3. x=2
= 5×2- 4×2×3
=10-8×3
=6