Sagot :
bonjour
A = - 6 x² - 9 x
B = - 21 x + 35 x²
C = x + 36 x² + 30 x = 36 x² + 31 x
D = 2 x + 8 + 12 = 2 x + 20
E = x² - 2 x + 6 x² = 7 x² - 2 x
F = - 4 t² + t + t = - 4 t² + 2 t
Réponse :
Bonjour
Explications étape par étape :
Exercice 49
A = -3x (2x + 3)
A = -6x² -9x
B = -7x (3 -5x)
B= -21x + 35x²
C = x + 3x (x + 10)
C = x + 3x² + 30x
C = 31x + 3x²
D = -2 (-x -4) + 12
D = +2x + 8 + 12
D = 2x + 20
E = x² -2 ( x - 3x²)
E = x² - 2x + 6x²
E = +7x² -2x
F = (4t -1) X (-t) + t
F = 4t² +t + t
F = 4t² + 2t