题目

    阅读下面的短文和问题，根据短文内容，完成对该问题的回答。答语要书写工整，字迹清楚，结构正确，不多于八个单词。     It is essential to our children’s development that they are provided with life skills. It is of great importance that our children should be taught basic life skill lessons in order to live the life they dream of as they enter adulthood.     How we teach youth life skills is the focus of this article. We will explore and share life skill lessons with you so that the time you spend with each child is more prod实数x、y、z满足x=6-3yx+3y-2xy+2z2=0，则x2y+z的值为 ．