1/ (х - 2) ^2 - 3 / (x-2) - 4 = 0 Общ. знаменатель (x - 2)^2
1 - 3(x-2) - 4 (x - 2)^2 = 0
1 - 3x + 6 - 4 (x^2 - 4x + 4) = 0
1 - 3x + 6 - 4x^2 + 16x - 16 = 0
- 4x^2 + 13x - 9 = 0
4x^2 - 13x + 9 = 0
D = 169 - 4(4)(9) = 169 - 144 = 25; YD = 5
x1 = (13 + 5) / 8 = 18/ 8 = 2,25
x2 = (13 - 5) /8 = 8/8 = 1