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aikenbeiker
@aikenbeiker
July 2022
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найдите координаты пересечения всех точек параболы у = -х^2 - 2х +1 и прямой у = - х - 1
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miron2077
Verified answer
Х²+2х+у=1
х+у=-1
у=(-х-1)
х²+2х-х-1=1
х²+х-2=0
х₁,₂=
-1⁺₋√(1+4)
=
-1⁺₋3
2 2
х₁=1 х₂=-2
у₁=-1-1=-2 у₂=2-1=1
1 votes
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Answers & Comments
Verified answer
Х²+2х+у=1х+у=-1
у=(-х-1)
х²+2х-х-1=1
х²+х-2=0
х₁,₂=-1⁺₋√(1+4) = -1⁺₋3
2 2
х₁=1 х₂=-2
у₁=-1-1=-2 у₂=2-1=1