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lolalol99
@lolalol99
July 2022
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Огэ пробное 7,8,21!!!!!
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shenyaevegor2
7.
2x^2-1=x
2x^2-x-1=0
x1,2=1(+-)√1+4*2*1 1(+-)√9 1(+-)3
---------------- === ------------ === ----------
4 4 4
x1=1 x2=-0.75
1 votes
Thanks 1
lolalol99
что ж так поздно то?
lolalol99
уже не нужно
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Answers & Comments
2x^2-1=x
2x^2-x-1=0
x1,2=1(+-)√1+4*2*1 1(+-)√9 1(+-)3
---------------- === ------------ === ----------
4 4 4
x1=1 x2=-0.75