Вопрос школьника по предмету Алгебра
Число 3 является корнем уравнения х2-7х+4с=0. Найдите коэффициент с. ПОМОГИТЕ ПОЖАЛУЙСТА!
Ответ учителя по предмету Алгебра
х^2-7х+4с = 0
3^2-7*3+4с = 0
9-21+4с = 0
4с = -9+21
4с = 12
с = 3
Число 3 является корнем уравнения х2-7х+4с=0. Найдите коэффициент с. ПОМОГИТЕ ПОЖАЛУЙСТА!
х^2-7х+4с = 0
3^2-7*3+4с = 0
9-21+4с = 0
4с = -9+21
4с = 12
с = 3
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помогите,срочно нужно решить