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gkeork
@gkeork
July 2022
2
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Привести в стандартный вид
(x+7)(2x-3)
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luku123456789
2х(в квадрате)-3х+14х-21
1 votes
Thanks 1
Sonyetshka
(х+7)(2х-3)=2х^2-3х+14х-21=2х^2+11х-21
Дальше решение:
D=121+168=289
x1=(-11+17):2=3
x2=(-11-17):2=-14
Ответ: х1=3, х2=-14.
0 votes
Thanks 0
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Answers & Comments
Дальше решение:
D=121+168=289
x1=(-11+17):2=3
x2=(-11-17):2=-14
Ответ: х1=3, х2=-14.