2х^2-8х+1=0 как найти дескрименант? Помогите). Created by ashatik666. algebra-ru

2х^2-8х+1=0 как найти дескрименант? Помогите)...

July 2022 1 38 Report

2х^2-8х+1=0 как найти дескрименант? Помогите)

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njhieyjdf 2х²-8х+1=0
D=b²-4ac=(-8)²-4*2*1=64-8=56
D=56
х1= -b-√D/2а=8-√56/4= 8-2√14/4=2(4-√14)/4=4-√14/2
х2=-b+√D/2а=8+√56/4=8+2√14/4=2(4+√14)/4=4+√14/2
Ответ:4-√14/2 ; 4+√14/2

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