решите уравнение 0,6а-(а+0,3)^2=0,27
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0.6a-(a^2+0.6a+0.09)=0.27
0.6a-a^2-0.6a-0.09-0.27=0
a^2=-0.36
ответ:корней нет
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Verified answer
0.6a-(a^2+0.6a+0.09)=0.27
0.6a-a^2-0.6a-0.09-0.27=0
a^2=-0.36
ответ:корней нет