Решите уравнение: x^2√7−6x−√7=0. Created by mihailshch. matematika-ru

Решите уравнение: x^2√7−6x−√7=0...

July 2022 1 14 Report

Решите уравнение:
x^2√7−6x−√7=0

Answers & Comments

belozerova1955 √7·х²-6х-√7=0
D = b²-4ac=(-6)² -4·√7·(-√7 )= 36+28 = 64; √D=√64=8
х₁= (6+8)/ 2√7 = 14/2√7 = 7/√7= √7
х₂ = (6-8)/2√7 = -2/2√7 = -1/√7
Ответ: √7; -1/√7 = -√7/7

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