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LDashaL
@LDashaL
October 2021
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Решите подробно систему, пожалуйста:)
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nKrynka
Y - x = 5
60/x - 50/y = 20/60
y = x + 5
60/x - 50/(x + 5) = 1/3
y = x + 5
180x + 900 - 150x = x^2 + 5x
x^2 - 25x - 900 = 0
D = 625 + 3600 = 4225
x1 = (25 - 65)/2
x1 = -20
x2 = (25+ 65)/2
x2 = 35
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Answers & Comments
60/x - 50/y = 20/60
y = x + 5
60/x - 50/(x + 5) = 1/3
y = x + 5
180x + 900 - 150x = x^2 + 5x
x^2 - 25x - 900 = 0
D = 625 + 3600 = 4225
x1 = (25 - 65)/2
x1 = -20
x2 = (25+ 65)/2
x2 = 35