Hello !
a)
En partant de -2
Programme 1 :
((-2) - 3) × 4 + (-2)² = -16
Programme 2 :
((-2) + 2)² - 16 = -16
En partant de 4/3
Programme 1 :
((4/3) - 3) × 4 + (4/3)² = -44/9
Programme 2 :
((4/3) + 2)² -16 = -44/9
b)
(x - 3) × 4 + x² = x² + 4x - 12
(x + 2)² - 16 = x² +4x -12