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luiza200480
@luiza200480
July 2022
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Решить уравнение: (2х+1)^2-(2х-3)^2=4(7х-5).
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avdokshina99
4х^2-4х+1-(4х^2-12х+9)=28х-20
4х^2-4х+1-4х^2+12х-9-28х+20=0
-20х+12=0
20х=12
х=12/20
х=0,6
7 votes
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Answers & Comments
4х^2-4х+1-4х^2+12х-9-28х+20=0
-20х+12=0
20х=12
х=12/20
х=0,6