решите неравенство (3x-2)-это под корнем меньше либо равно 4

Оля выучила четверть слов а если бы она выучила ещё 4 слова то она бы выучила треть слов сколько слов выучила оля

помогите пожалуйста решить уравнение                       15х-4х-35=0   над х посде 15 стоит цифра 2!!! ну тоесть в квадрате. заранее спасибо;););)

ПЕРЕВЕДИТЕ ТЕКСТ И СОКРАТИТЕ ЕГО ДО 4-6 предложений One Saturday last winter, my best friends Amy, Maria, Greg, Andy and I decided to spend the weekend in my uncle is big, old house in the country. It was stormy outside, so we decided to spend a cosy evening chatting together in the living room dowstairs. Suddenly, there was a powerful gust of wind. The lights fickered and then went out altogether. " What was that?" I said. " Don it worry, John, it is just a power cut, " Greg reassured me. We carried on laughing and telling scary stories in the dark. After a while, there was a bright flash of lightning that lit up the whole room. There was a loud gasp. "Andy is missng!" Am cried. We all looked at each other confused and scared, because no one had seen Andy laeve the room.We felt our way around the house, calling Andy, but there was no reply. We went back to the living room and triend to think of what to do next. Just then, there was a loud snore from the corner of the room. At that moment, the lights came back on. There was Andy, fast asleep on a big , velvet sofa! Andy sat up sleepily, rubbing his eyes." Oh good, the lights are back on! " he said. " I was sleepy and felt like a snooze. I didn it want anyone to trip over me so I crawled over me so I crawled over here. " We were all very relieved.