Bonjour
25xau cube - 16x = 0
X (25x^2 -16) = 0
X(5x-4)(5x+4) = 0
X = 0
5x-4 = 0
5x = 4
X = 4/5
5x + 4 = 0
5x = -4
X = -4/5
3(2-6x)-2(2x-5)=x+11+(5x-2)au carré -(5x+6)(5x-8)
6 -18x -4x + 10 = x + 11 + 25x^2 -20x +4 -(25x^2-40x + 30x-48)
-22x + 16 = 25x^2 -19x + 15 -25x^2 + 10x + 48
-22x + 16 = -9x + 63
-22x + 16 + 9x -60 = 0
-13x -44 = 0
-13x = 44
X = -44/13