Bonjour !
A = -3(x+5) = -3 *x -3 *5 = -3x - 15
B = -4(t-2) = -4*t -4*(-2) = -4t + 8
C = 2y (7+y) = 2y*7 + 2y*y = 14y + 2y²
D = x(4x - 8) = 4x*x -8x = 4x² -8x
E = -w(w-2) = -w*w -w*(-2) = -w² + 2w
F = -2x(5x-3) = -2x*5x -2x*(-3) = -10x² + 6x
N'hésite pas si tu as des questions.
