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omigovich
@omigovich
July 2022
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решите срочно уравнение
1)4y²-28y+49=0
2)9c²+30c+25=0
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sedinalana
Verified answer
4у²-28у+49=0
(2у-7)²=0
2у-7=0
2у=7
у=3,5
9с²+30с=25=0
(3с+5)²=0
3с+5=0
3с=-5
с=-1 2/3
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Thanks 0
koka15
в первом ответ 7
sedinalana
С чего это?
koka15
квадратное уравнение ало
sokolanna
1)(2у-7)^2=0
2у=7
у=3,5
2)(3с+5)^2=0
3с=-5
с=-5/3
0 votes
Thanks 0
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Answers & Comments
Verified answer
4у²-28у+49=0(2у-7)²=0
2у-7=0
2у=7
у=3,5
9с²+30с=25=0
(3с+5)²=0
3с+5=0
3с=-5
с=-1 2/3
2у=7
у=3,5
2)(3с+5)^2=0
3с=-5
с=-5/3