Решите квадратное уравнение! (x-2)(12-x)=9. Created by MolodoyPACAN. algebra-ru

Решите квадратное уравнение! (x-2)(12-x)=9...

July 2022 2 18 Report

Решите квадратное уравнение!
(x-2)(12-x)=9

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12x - x^2 - 24 + 2x - 9 = 0
- x^2 + 14x - 33 = 0 / :(-1)
x^2 - 14x + 33 = 0
D = 14^2 - 4*33 = 196 - 132 = 64
x1 = (14 + 8)/2 = 22/2 = 11
x2 = (14 - 8)/2 = 6/2 = 3

Ответ
3 ; 11

2 votes Thanks 1

Kixcertborn2

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О,Ваше задание решено!Ответ во вложении!!!

0 votes Thanks 0

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