Answer: a). 7 b). 1 c). 1
Explanation:
a). Sub x =-1
2 x (-1)^2 - 4 x (-1) + 1
2 x 1 - 4 x -1 + 1
2 + 4 + 1
= 7
b). Sub x = 2
2 x (2)^2 - 4 x (2) + 1
2 x 4 - 4 x 2 + 1
8 - 8 + 1
= 1
c). Sub x = 0
2 x (0)^2 - 4 x (0) + 1
2 x 0 - 4 x 0 + 1
0 - 0 + 1
= 1