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Квадратные уравнения

Решение квадратных уравнений

Найдите сумму корней уравнения: x^2-2x+4=0 3
Приведите уравнение (x + 7)*2 - 31 = 4x^2 - x к виду ax^2 + bx + c = 0: 4x^2 - 3x +17 = 0
Найдите произведение корней уравнения: 2x^2 - 4x - 70 = 0 -35
Сколько действительных корней имеет уравнение: 16x^2 + 24x + 9 = 0 1
Найдите значение коэффициента b, если в уравнении 5x^2 + bx - 6 = 0 один из корней уравнения равен 2 -7
Решить уравнение : 2x^2 - 7x - 9 = 0 x1 = -1; x2 = 4,5.
Решить уравнение: 2x^2 - 7x + 5 = 0 x1 = 1; x2 = 2,5.
Решить уравнение: 2x^2 - 9x - 11=0 x1= -1; x2 = 5,5.
Приведите уравнение 2х^2 +15 - x = (х-3)*3 к виду: х^2 + px + q = 0 x^2 - 2x + 12 = 0
Найдите отрицательный корень уравнения х^2 + 10x - 11 = 0 -11
Created by: Katerina_