Question

Найдите дискриминант
1/7 x² - x +1 5/7=0

Answer 1

1/7x²-x+1 5/7=0

D=(-1)²-4*1/7*1 5/7 = 1/49

х₁ ₂ = -(-1)±√1/49 / 2*1/7

х₁ = 1+1/7 / 2/7 = 4

х₂ = 1-1/7 / 2/7 = -3

Ответ: х₁ = 4; х₂ = -3