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Mabegrata
6 год назад
20Xквадрате-9x+1 = 0 РЕШИТЕ ПОЖАЛУЙСТА
ОТВЕТЫ
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Вебер
Jun 30, 2019
20x^2 - 9x + 1 = 0
D = 81 - 80 = 1
x1 = ( 9 + 1)/40 = 10/40 = 1/4 = 0,25
x2 = ( 9 - 1)/40 = 8 /40 = 2/10 = 1/5 = 0,2
D = 81 - 80 = 1
x1 = ( 9 + 1)/40 = 10/40 = 1/4 = 0,25
x2 = ( 9 - 1)/40 = 8 /40 = 2/10 = 1/5 = 0,2
20x²-9x+1=0, D=(-9)²-4.20.1=81-80=1, √D=√1=1
x1=(9+1)/20=10/20=1/2=0,5
x2=(9-1)/20=8/20=2/5=0,4
x1=(9+1)/20=10/20=1/2=0,5
x2=(9-1)/20=8/20=2/5=0,4
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