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в числителе 36-а^2

в знаминателе 18+3a

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в числителе 9р^2-q^2

в знаминателе 9р^2+6pq+9

Подъёмная сила определяется по формуле:

F=...

раскрой скобки, пользуясь распределительнм закононом:

1) с(-3а+2с-d+1)

2)-5x(x-0,2у+0,6n-1,8

( СРОЧНО НАДО!!!!)

Розничная цена учебника 156 рублей, она на 20% выше оптовой цены. Какое наибольшее число таких учебников можно купить по оптовой цене на 9000 рублей?

перевидите ) только нормально) We had one phone in our house . It was not only wired to the wall, it was on the wall and had a very shot cord. If you wanted to call someone you stood facing the phone to dial the number. You never knew if one or more neighbours were listening as all they had to do is pick up thier receiver to eavesdrop on you conversation . Back then teenage conversations weren't so important . Any adult wanting the line could interrupt you . Unfortunately , there were no other options for communicating. There were no personal computers, no Internet , no e-mail, no text messaging or chat rooms.That landline phone was all we had . Still trying to avoid eavesdropping , I turned sideways trying not to listen to either of them . You see, I'm old enough to control my behaviour but not old enough to have poor hearing . I could not hearing their conversation.