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Пусть (t²-2t)=х, а (t²-2t)²= х²х²-3=2хх²-2х-3=0D=4-4*(-3)=4+12=16х1= \frac{2+4}{2} = \frac{6}{2} =3х2= \frac{2-4}{2} = \frac{-2}{2} =-1(t²-2t)=3t²-2t-3=0D=4D=4-4*(-3)=4+12=16х1= \frac{2+4}{2} = \frac{6}{2} =3х2= \frac{2-4}{2} = \frac{-2}{2} =-1(t²-2t)=-1t²-2t+1=0D=4-4=0х1,2= \frac{2}{2} =1
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Автор:
octavio34 - 6 лет назад
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