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landishhoran
@landishhoran
August 2022
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Решите неравенство: х^2-х-2>_0
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m11m
X² -x-2 >0
Парабола, ветви направлены вверх
х²-х-2=0
Д=1+4*2=9
х₁=
1-3
= -1
2
х₂=
1+3
=2
2
+ +
----------- -1 ----------- 2 -----------
\\\\\\\\\\ - \\\\\\\\\
х∈(-∞; -1)∨(2; +∞)
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Answers & Comments
Парабола, ветви направлены вверх
х²-х-2=0
Д=1+4*2=9
х₁=1-3 = -1
2
х₂=1+3 =2
2
+ +
----------- -1 ----------- 2 -----------
\\\\\\\\\\ - \\\\\\\\\
х∈(-∞; -1)∨(2; +∞)