Найдите корень уравнения 3x^2-14x+15=0

3x² - 14x + 15 = 0

D = b² - 4ac = ( - 14) ² - 4 * 3 * 15 = 196 - 180 = √16 = 4

x₁ = 14 + 4 / 6 = 3

x₂ = 14 - 4 / 6 = 10/6 = 5/3

Ответ: x₁ = 3, x₂ = 5/3

D = b*b - 4 * a*c = (-14) * (-14) - 4*3*15 = 16

x1 = ( - b - корень (D)) / (2*a) = (14 - 4) / (2 * 3) = 10 / 6 = 5/3

x2 = ( - b + корень (D)) / (2*a) = (14 + 4) / (2 * 3) = 18 / 6 = 3

Ответ

x1 = 5/3

x2 = 3