((3х+1)/(2х-4)) * (х-2)/(3х+1)^2=(2*(х-2))/((х-2)*(3х+1)=2/(3х+1)
Ответ:
(x-2)²=2(3x-10)
раскроем скобки
x2-2x-2x+4 = 6x-20
x2-10x+24 = 0
Вычислим дискриминант D
D = b2 - 4ac = ( – 10)2 – 4·1·( + 24) = 4
x1 = -b + √ D = 10 + √ 4 = 10 + 2 = 12 = 6
2a 2·1 2 2
x2 = -b – √ D = 10 – √ 4 = 10 – 2 = 8 = 4
2a 2·1 2 2
Объяснение:
Cos2x=-√3/2
2x=+-<span>5П/6+2Пn
x=+-</span><span>5П/12+Пn </span>