Предмет: Алгебра, автор: Аноним

Найдите значение выражения:

а) 8^ умножить на 2^4 длинная черта 4^5
б) 2-7х^2 при х=-1/2

Ответы

Автор ответа: jullvin
0
б) ответ 9
2-7*(-1/2)*2=2+7=9
Похожие вопросы
Предмет: Английский язык, автор: Ksennnia0
ПОМОГИТЕ, нужно поставить предложения в будущем времени ;) Complete the conversation, using the verbs given in brackets in one of the forms expressing the future.
Nola: ​I'm worried about my exams next week.
Peter: Don't worry. You _________(not to fail). I'm sure you ________(to do) well. Of course, if you ________ (not to be) too nervous.
Nola: Anyway, even if I ________ (to pass) them, my life ________ (to change). I ________ still (to go on) working in the same old job for the same old boss.
Peter: I know you don't like him, but don't worry. He probably ________ (not to stay) much longer. He's not happy here. I expect he ________ (to leave) soon. I’ve heard he is going to work for Virgin Ailines, if he ________ (not to change) his mind.
Nola: ​Well, let's think about something more pleasant. We ________ (to go away) after the exam?
Peter: ​I ________ (to tell) you a good idea. We ________ (to spend) a few days at my aunt's cottage in Essex, where we went last summer. Remember?
Nola: ​I remember the accident you had on the way.
Peter: Oh, don't worry. I ________ (not to have) an accident this time. And the car (not to break down), either if I ________ (to have it serviced) at the nearest weekend.
Nola: We ________ (to need) our sleeping bags. They're in the loft I expect they're damp and dirty. If we ________ (to take) them like this, we ________ (not to be able) to sleep in them.
Peter: That's all right I ________ (to get them down) this evening, I (to wash) them in the morning, and then I ________ (to hang) them out in the garden to dry.
Nola: Wonderful! So we ________ (to leave) as soon as the results ________ (to come out).
Предмет: Математика, автор: TAIbragimov
Предмет: География, автор: kukolka15112001