(2x-1)/(x+2) - (22-7x)/(2-x) + (6x-6)/(3x2-12) = 0
(2x-1)/(x+2) + (22-7x)/(x-2) + (2x-2)/(x2-4) = 0 |*(x^2 - 4)
(2x-1)(x-2) +(22-7x)(x+2) + 2x -2 = 0
2x^2 - 4x - x + 2 +(22x + 44-7x^2 - 14x) + 2x-2 = 0
2x^2 - 4x - x + 2 + 22x + 44-7x^2 -14x + 2x-2 = 0
-5x^2 + 5x -44 = 0
Jetzt Mitternachtsformel.
x1 = 1/10 (5-√(905))
x2= 1/10 (5+ √(905))