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Dianka981
@Dianka981
August 2021
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Решите пожалуйста уравнение:
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miron2077
Verified answer
Х≠+5 и -5
х²+5х+7х+35=2х²-50
х²-12х-85=0
х₁=
12+√(144+340)
=
12+22
= 17
2 2
х₂=
12-√(144+340)
=
12-22
=-5 не подходит
2 2
х≠+2 и -2
х²+2х-8=7х-14
х²-5х+6=0
х₁=
5+√(25-24)
=
5+1
=
3
2 2
х₂=
5-√(25-24)
=
5-1
= 2 не подходит
2 2
2 votes
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Answers & Comments
Verified answer
Х≠+5 и -5х²+5х+7х+35=2х²-50
х²-12х-85=0
х₁=12+√(144+340) = 12+22 = 17
2 2
х₂=12-√(144+340) = 12-22 =-5 не подходит
2 2
х≠+2 и -2
х²+2х-8=7х-14
х²-5х+6=0
х₁=5+√(25-24) = 5+1 = 3
2 2
х₂=5-√(25-24) = 5-1 = 2 не подходит
2 2