Respuesta :

-2x^2 + 1 for x = -3
-2(-3)^2 + 1 = -2(9) + 1 = -18 + 1 = -17

2^x for x = 3
2^3 = 2 x 2 x 2 = 8

4x - 4 for x = 3
4(3) - 4 = 12 - 4 = 8