Предмет: Алгебра, автор: dalimovhojiakbar

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Автор ответа: iryna04

Ответ:

$a) \: \sqrt{32} + \sqrt{18} - \sqrt{50} = \\ = \sqrt{2 \times 16} + \sqrt{2 \times 9} - \sqrt{2 \times 25} = \\ = 4 \sqrt{2} + 3 \sqrt{2} - 5 \sqrt{2} = 2 \sqrt{2}$

Объяснение:

$b) \: \sqrt{3 \times 9} - \sqrt{3 \times 16} + \sqrt{3 \times 25} = 3 \sqrt{3} - 4 \sqrt{3} + 5 \sqrt{3} = 4 \sqrt{3}$

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I am so busy. I ... a science fiction now.
watch
watches
am watching
watched
have watched
had watched
will watch
You ... cheat at the exams.
do
must
have to
should
shouldn't
is not
I ... often ... lots of questions at the lessons.
ask
do ask
am asked
is asked
are asked
What do you prefer to to do in your free time?
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Special
Alternative
Disjunctive
When we ..., the children ... the experiments.
enter, had done
entered, are doing
entered/ were doing
were entering/ were doing
will enter/ would done
When we ..., the inventors ... (already) those problems.
came/ had discussed
come/ discussed
He ... always invited to the parties.
am
is
are
will come/ have discussed
are coming/ discuss
have come/ had
What tasks ... you usually ... to do at home?
are given
is given
am given
give
given
Do you attend a school or a college?
General
Special
Alternative
Disjunctive
Horror films ... not to watch when you're alone.
are advised
advise
is advised
am advised
is advising

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