Bonsoir
D = (3x-5)(x+3)- (2x+7)
D = (3x-5)(x+3-2x-7)
D = (3x-5)(-x -4)
E = (10-3y)(10+3y) identité remarquable
F = -(x+3) + (x+3)(1-7x)
F = - (x+3)+(1-7x)
F = -(x+3 +1 -7x)
F = -(-6x +4) = 6x -4
G = 2x² -20x +25 identité remarquable
H = y² + 2y/3 +1/9
J = 16-q²
