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vasiliidragan
@vasiliidragan
July 2022
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помогите пожалуйста решить уравнения:
а)5х²+0.2х=0
б)5х²-6х+1=0
в)3х(3х-2)+7=6
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pingi2159
Verified answer
А) домножим на 5
25x²+x=0
x(25x+1)=0
x=0 и 25x+1=0
x=-
=-0,04
б)5x²-6x+1=0
по теореме виета x=1 и x=0,2
в)3x(3x-2)+7=6
9x²-6x+1=0
D=b²-4ac=36-4·9·1=36-36=0
x=
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Answers & Comments
Verified answer
А) домножим на 525x²+x=0
x(25x+1)=0
x=0 и 25x+1=0
x=-=-0,04
б)5x²-6x+1=0
по теореме виета x=1 и x=0,2
в)3x(3x-2)+7=6
9x²-6x+1=0
D=b²-4ac=36-4·9·1=36-36=0
x=