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Даша5151
@Даша5151
July 2022
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Решите неравенство
(2-x)(x+2) больше или равно (x+2)(x+4)
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sasha1781
2х+4-х²-2х>=х²+4х+2х+8
2х+4-х²-2х-х²-4х-2х-8>=0
-2х²-6х-4>=0
х²+3х+2>=0
D=9-8=1
х=-1 х=-2
(-бесконечность;-2]
[-1;+бесконечность)
1 votes
Thanks 1
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Answers & Comments
2х+4-х²-2х-х²-4х-2х-8>=0
-2х²-6х-4>=0
х²+3х+2>=0
D=9-8=1
х=-1 х=-2
(-бесконечность;-2]
[-1;+бесконечность)