Question

Boa noite  me ajuda resolver

y= x³ - 2 x +1;x = -1

Answer 1

y= -1² - 2 (-1) +1
y= 1 +2 +1 = 4

Answer 2

y = -1 + 2 + 1 = 2
porque x³ = (-1) x (-1) x (-1) = -1
e -2x = -2 x (-1) = 2