Предмет: Алгебра, автор: oooooooooosan72

найдите два числа если их разность равна 9, а произведение 162​

Ответы

Автор ответа: KerrSar
2

Ответ: 36 и 27 или -9 и -18

Объяснение: x1-x2=9

x1×x2=162

Решаем как систему:

Метод подстановки:

Из первого берём, что x2=x1-9 =>

x1×(x1-9)=162

x1*2-9x1=162

x1*2-9x1-162=0

По дискриминанту:

D=81+648=729

x1=36

x2=-9

Подставляет в первое:

36-x2=9 => x2=27

-9-x2=9 => x2=-18

elpeefreddi: Это неправильно( как минимуи про дискриминант)
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