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PolinaTorkhunova
@PolinaTorkhunova
August 2021
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Помогите, пожалуйста, решить неравенство. Желательно с полным объяснением : х^2+5x+18/x-4>-2
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tan4ik3107
Х²+5x+18/x-4 > -2
х²+5x+18 > -2(х-4)
х²+5x+18 > -2х+8
х²+5x+18+2х-8 > 0
х²+7x+10 > 0
х²+7x+10=0
D=49-40=9
x1=-7+3/2=-4/2=-2
x1>-2
x2=-7-3/2=-10/2=-5
x2>-5
x1>-2, x2>-5
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Answers & Comments
х²+5x+18 > -2(х-4)
х²+5x+18 > -2х+8
х²+5x+18+2х-8 > 0
х²+7x+10 > 0
х²+7x+10=0
D=49-40=9
x1=-7+3/2=-4/2=-2
x1>-2
x2=-7-3/2=-10/2=-5
x2>-5
x1>-2, x2>-5