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Ринш1
@Ринш1
September 2021
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выражение B + 1 3 в квадрате
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Glaset
(b+13)^2=b^2+26b+169
b^2+26b+169 D=0
x1=-26/2=-13
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Ринш1
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b^2+26b+169 D=0
x1=-26/2=-13