Вопрос школьника по предмету Алгебра
решите уравнение (3х-8)(3х+1)=(3х-1) в квадрате
решите уравнение (3х-8)(3х+1)=(3х-1) в квадрате
Ответ учителя по предмету Алгебра
Ответ:
9х^2+3х-24х-8=9х^2-6х+1
3х-24х-8=-6х+1
-21х-8=-6х+1
-21х+6х=1+8
-15х=9
х=-3/5
Ответ:х=-0.6
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