Предмет: Математика, автор: Skorpion885

х(2х+1)=3х+4
Решите квадратные уравнения

Ответы

Автор ответа: Габриээла

0

2х²+х=3х+4
2х²+х-3х-4=0
2х²-2х-4=0
х²-х-2=0
Дискриминант 2+4*2=10
√дискриминант=√10

х=(2+-√10):2

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