Предмет: Алгебра, автор: Danja3833

Решите уравнение. 2х²+х-1=0

Ответы

Автор ответа: ВладимирБ

2х²+х-1=0
D=9
x₁=(-1-3)/4=-1
x₂=(-1+3)/4=1/2

Автор ответа: жуля9

D = 1 + 4*1*2 = 9
x1=-1
x2=1/2

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