Bonsoir,
Je suppose qu'i faut factoriser ?
R = x² + 2x + 1
R = (x + 1)²
y² - 81
= (y - 9) (y + 9)
S = 9a² - 36a + 36
S = 9 (a - 2)²
T = 9a² - 64
T = (3a - 8) (3a + 8)
U = 25c² + 9 + 30c
U = (5c + 3)²
V = 4x² + 4
V = 4 (x + 1)
Z = (3a - 8)² - (5 - 4a)²
Z = (3a - 8 - 5 + 4a) (- 3a + 8 - 5 + 4a)
Z = (7a - 13) (a + 3)
