Répondre :
(6x+2)² - (2x-2)(6x+2) + (x-1)²
(6x+2) (6x+2-2x+2) + (x-1)²
(6x+2) (4x+4) + (x-1)²
24x²+24x+8x+8 +x²-2x+1
25x² + 30x +9
a=25
b=30
c=9
delta = b²-4ac = 0
racine unique x1 = (-b+racine(delta))/2a = -0,6
donc F(x) = a(x-x1)(x-x2)
F(x) = 25(x+0,6)²
(6x+2) (6x+2-2x+2) + (x-1)²
(6x+2) (4x+4) + (x-1)²
24x²+24x+8x+8 +x²-2x+1
25x² + 30x +9
a=25
b=30
c=9
delta = b²-4ac = 0
racine unique x1 = (-b+racine(delta))/2a = -0,6
donc F(x) = a(x-x1)(x-x2)
F(x) = 25(x+0,6)²