题目

Stephen Hawking was born in Oxford, England on 8th January, 1942. He went to school in St Albans--a small city near London. Although he did well, he was never top of his class. After leaving school, Hawking went first to Oxford University where he studied physics, then he went to Cambridge University where he studied cosmology. As he himself admits(承认), he didn't work hard. He was a very lazy student, and did very little work. However, he still got good marks.      It was at the age of 20 that Hawking first noticed something was wrong with him. He started to bump (撞上 )into th求各式中的实数x：(x＋10)＝－27；