Réponse :
Explications étape par étape :
Bonjour
m = 2 et n = -3.
A = 2(m + n)
A = 2 m + 2 n
A = 2(2) + 2 (-3)
A = 4 - 6
A = - 2
B = 3m - 2n
B = 3(2) - 2(-3)
B = 6 + 6
B = 12
C= -2m² + 5n - 3
C = - 2 (2)² + 5 (-3) - 3
C = - 8 - 15 - 3
C = - 26
D = m(m + 3)
D = m² + 3m
D = (2)² + 3(2)
D= 4 + 6
D = 10
E = 4mn
E = 4 (2)(-3)
E = - 24
F = 5m² – 8mn
F = 5 (2)² - 8 (2)(-3)
F = 20 + 48
F = 68
