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nastyapipko
@nastyapipko
July 2022
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Решить уравнение: (6-x)*(5x+40)=0
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Nimnul74
Verified answer
Раскроем скобки
30х+240-5х²-40х=0
-5х²-10х+240=0
5х²+10х-240=0
разделим все слагаемые на 5
х²+2х-48=0
по теореме Виетта
х1+х2=-2
х1*х2=-48
х1=6
х2=-8
0 votes
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Answers & Comments
Verified answer
Раскроем скобки30х+240-5х²-40х=0
-5х²-10х+240=0
5х²+10х-240=0
разделим все слагаемые на 5
х²+2х-48=0
по теореме Виетта
х1+х2=-2
х1*х2=-48
х1=6
х2=-8