- 0.5x^2 + 6x - 7 = 0 решите уравнение. Created by cdtnf2001. algebra-ru

- 0.5x^2 + 6x - 7 = 0 решите уравнение...

cdtnf2001 @cdtnf2001

June 2022 1 9 Report

- 0.5x^2 + 6x - 7 = 0
решите уравнение

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fiofionina

Verified answer

Решение:
-0,5х² +6х -7=0
х1,2=(-6+-D)/2*-0,5
D=√(36-4*-0,5*-7)=√(36-14)=√22
х1,2=(-6+-√22)/-1
х1=(-6+√22)/-1=-(6-√22)/-1=6-√22
х2=(-6-√22)/-1=-(6+√22)/-1=6+√22

Ответ: (6-√22); (6+√22)

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