Найдите угол между диагоналями четырехугольника АBCD, если B(-4;2), A(-5;2 в корне 3), D(0;2), C(-2,в корне 3)

3X-8 РАЗДЕЛИТЬ НА X+2 + 8 РАЗДЕЛИТЬ НА x-2= 7x² - 28 РАЗДЕЛИТЬ НА X² - 4

Правильно употребить глаголы в Past Simple, Past countinuous, Past Perfect

3. Yesterday I (to read) a story. It (to be) a story about a novelist who (to write) a novel that (to be) a great success. Once he (to mmet) his friend that he (not to see) for many years. After they (to talk) for some hours, the novelist ( to say): *We have already talked about me. Now, lets talk about you. What you (to think) about the lst novel when you (to read) it?*