Решить уравнение: a)a+b/x - c= d - a-b/x; б) a+b/x+a/b=-1; в)1+x/1-x=a/b:
265
378
Ответы на вопрос:
a) 3x-x = 0 => 2x = 0 => x = 0
б) 3x-3x = 4 => 0 = 4 => нет корней
в) x^2 + x - 6 = 0 => d = 1 + 24 = 25 => x = (-1 +- 5)/2 => x1 = 2, x2 = -3
г) x^2 + 4x +3 = 0 => d = 16 - 12 = 4 => x = (-4 +- 2)/2 => x1 = -1, x2 = -3
д) x^2 - 4x = 0 => x(x-4) = 0 => x1 = 0, x2 = 4
е) x^3 + 2 - 3x = 0 => (x-1)*(x^2 + x - 2) = 0 => x1 = 1, x^2 + x - 2 = 0 => x2 = x1 = 1, x3 = -2
Популярно: Алгебра
-
lika36016.11.2021 12:16
-
gusarova1717.06.2021 01:57
-
lirazelio25.05.2021 18:43
-
ianezlo02.01.2022 14:24
-
Кипарисный09.08.2021 05:01
-
Elizaveta123696326811.06.2020 13:35
-
мага0505107.02.2021 20:32
-
akniet808.01.2022 19:42
-
ElizavetaBro3428.06.2023 16:08
-
Зарема95102.06.2020 18:13