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assasos
@assasos
July 2022
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помогите решить уравнение
(x-1)(4x-1)=(x+2)(2x+12)
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nadya987
Verified answer
4х²-х-4х+1=2х²+12х+4х+24
4х²-х-4х+1-2х²-12х-4х-24=0
2х²-21х-23=0
Д = (-21)² - 4*2*(-23) = 441 +184=625
√Д =√625 =25
Х1= (21+25) /4 =11,5
Х2 =(21-25)/4 = -1
Ответ 11,5; -1
1 votes
Thanks 1
ShirokovP
(21-25)/4 = -0,75
ShirokovP
21 - 25 = - 4/4 = - 1
ShirokovP
!!!
nadya987
Извините, просто быстро считала))) Спасибо,что заметили
assasos
спасибо
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Answers & Comments
Verified answer
4х²-х-4х+1=2х²+12х+4х+244х²-х-4х+1-2х²-12х-4х-24=0
2х²-21х-23=0
Д = (-21)² - 4*2*(-23) = 441 +184=625
√Д =√625 =25
Х1= (21+25) /4 =11,5
Х2 =(21-25)/4 = -1
Ответ 11,5; -1