Предмет: Алгебра, автор: znanif

Помогите решить номер 616. Заранее спасибо.​

Приложения:

Ответы

Автор ответа: yuliaproshko
1

Ответ:

Объяснение:

1) \frac{2}{7}x(1.4x^{2}-3.5y )= \frac{2}{7}x*\frac{14}{10}x^{2}  -\frac{2}{7}x*\frac{35}{10}y=\\ \\= \frac{2}{5} x^{3} -\frac{5}{5}y= \frac{2}{5} x^{3} -y

2) -\frac{1}{3}c^{2}  *(1.2d^{2} -6c)=-\frac{1}{3}c^{2}  *\frac{12}{10}d^{2}  +\frac{1}{3}c^{2}  *6c=\\\\=-\frac{4}{10} c^{2} d^{2} +2c^{3} =-\frac{2}{5} c^{2} d^{2} +2c^{3}

3) \frac{1}{2}ab(\frac{2}{3}a^{2} -\frac{3}{4} ab+\frac{4}{5} b^{2}  ) =\frac{1}{2}ab*\frac{2}{3}a^{2} - \frac{1}{2}ab*\frac{3}{4} ab+ \frac{1}{2}ab*\frac{4}{5} b^{2}  =\\\\ =\frac{1}{3} a^{3}b-\frac{3}{8} a^{2} b^{2} +\frac{2}{5} ab^{2}

что под Г не видно

Похожие вопросы
Предмет: Математика, автор: elenalarkova365
Предмет: Английский язык, автор: alexminaev
Задание.Study general free time activities and their definitions. Translate them.

Surf the internet - On the internet, you can research a topic you are interested in using a search engine, visit your favourite websites, watch music videos, create your own video and upload it for other people to see, maintain contact with your friends using a social networking site, write your thoughts in a blog, learn what is happening in the world by reading news websites, etc.
Play video games - You can play games on your computer or on a game consoles, like PlayStation, X-Box, Wii, PSP, Gameboy, etc. You can play on your own or with your friends or family.
Play a musical instrument - Learn to play the piano, guitar, violin, cello, flute, piano accordion, mouth organ, panpipes, clarinet, saxophone, trumpet, etc. You can play on your own or with a group, such as a band or an orchestra.
Listen to music - Turn up the volume and listen to your favourite type of music, such as pop, rock, hip hop, rhythm & blues, blues, jazz, classical, soul, heavy metal.
Read - Many people love to read both fiction and non-fiction books and magazines. If you like fiction, you can read novels, short stories, crime fiction, romance, etc. If you like non-fiction, you can read biographies, autobiographies, or books on history, science, philosophy, religion, or any other topic you are interested in.
Write - Many people like to write in their diary. Another name for a diary is a journal. You can also write many other things, such as poetry, novels, letters, short stories, etc. (See under Read for more options).
Предмет: Математика, автор: Аноним