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maksus2002
@maksus2002
August 2022
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розв'язати рівняння:
(2х-5)^2-1=0
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Akula17
2x - 5=1 или 2x - 5 = - 1
2x=1+5 2x= - 1+5
2x=6 2x= 4
x=6:2 x=4:2
x=3 x=2
Ответ:3;2.
3 votes
Thanks 4
maksus2002
ерунда
GreatFilter
(2х-5)²-1=0
4x²-20x+25-1=0
4x²-20x+24=0
4(x²-5x+6)=0
x²-5x+6=0
x₁+x₂=5 - теорема Виета
x₁x₂=6
x₁=3
x₂=2
4 votes
Thanks 3
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Answers & Comments
2x=1+5 2x= - 1+5
2x=6 2x= 4
x=6:2 x=4:2
x=3 x=2
Ответ:3;2.
4x²-20x+25-1=0
4x²-20x+24=0
4(x²-5x+6)=0
x²-5x+6=0
x₁+x₂=5 - теорема Виета
x₁x₂=6
x₁=3
x₂=2