Предмет: Математика, автор: sanek8525

Log2(x^2-3x)=2
Log2x+log2(x-3)=2
Log4(2x-1)Больше или равно1/2

Ответы

Автор ответа: Checov7400

0

Log2(X²-3X)=Log2 2² Log2 (X*(X-3))=Log2 2²
X²-3X=2² X(X-3)=4 X²-3X-4=0
X²-3X-4=0 X1+X2=3
X1+X2=3 X1*X2=-4
X1*X2=-4 X1=4 X2=-1
X1=4
X2=-1

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: jabrailisaev2004

1. Richard __a__ very hard at the moment.
a) works b) is working c) has worked
2. We _____ on the beach when it started to rain.
a) played b) are playing c) were playing
3. The River Amazon ___a__ into the Atlantic Ocean.
a) flows b) flowed c) is flowing
4. World War II _____ out in 1939.
a) broke b) has broken c) had broken
5. Dad _____ to work by the time I woke up.
a) is going b) had already gone c) has already gone
6. She was steering the boat while he _____ the guitar.
a) played b) was playing c) has been playing
7. Fay _____ every day for the last six months.
a) exercises b) is exercising c) has been exercising
8. They _____ in that house for five years.
a) live b) are living c) have lived
9. They ____ on the platform for an hour when the train came.
a) stood had b) were standing c) had been standing
10. Lilian _____ seldom late for work.
a) is b) has been c) had been
11. Mr. Johnson _____ a new shop in the village next month.
a) is opening b) opens c) opened
12. She ______ here for six years by the end of this week.
a) will have been working b) will work c) will be working

6 лет назад

Предмет: История, автор: vkisel84

чи справедливо на вашу думку, твердження про позитивне
значення входження українських земель до складу польського королівства

6 лет назад

Предмет: Химия, автор: vfhbz2006

какой класс веществ у гидроксида кальция?

6 лет назад

Предмет: Химия, автор: Zahar830

Сколько грамм Fe потребуется при взаимодействие с Cuso4,если выделяется 32 грамма Cu

9 лет назад

Предмет: Математика, автор: GardenWeasel01

Из 2,5 кг апельсинов получается 1 литр выжатого сока. Сколько сока получится из 750 кг апельсинов.

9 лет назад