问题
解答题
一个正方形的边长增加3cm，它的面积就增加39cm2，则这个正方形的边长原来是多少？
答案
解：设这个正方形的边长原来是xcm，列式得
（x+3）2-x2=39
解得x=5，
所以这个正方形的边长原来是5cm。
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一个正方形的边长增加3cm，它的面积就增加39cm2，则这个正方形的边长原来是多少？
解：设这个正方形的边长原来是xcm，列式得
（x+3）2-x2=39
解得x=5，
所以这个正方形的边长原来是5cm。
My father was in the navy, which meant that my mother was married to both my father and the sea. As was often the case, we had to pack our belongings into boxes and those we had grown to love. We would arrive at our new home and find ourselves once again brother and me around before the ship was out of , wipe our tears, and take us back home to start the process of in with the new environment again. Throughout the years of changing , schools and friends, there remained one constant in my childhood — my mother. For both my brother and me, she was the cook, maid and teacher. She played these roles while some type of part-time job. Leaving a career is just one of the sacrifices which my mother made for my family as we moved around the world with our father every three years or so. While she had to deal with only a small budget, my mother, somehow, managed to make each house to be the very home that is safe and comfortable. This probably sounds like a depressing way to live, with two small children: “single” parenthood, short-term friendships, and the inability to a career or establish a home. But it was not for my mother. She turned this into adventure for us all! Each relocation (变换位置) was a chance to another part of the world. My mother greeted each new culture, climate and neighborhood. Each new house was a to rearrange furniture, make curtains and pictures. Every part-time job was an opportunity to learn something new and work with interesting people. No matter how difficult the life was, she was always having a attitude. She always had strength in the face of struggle and change. My mother was so all those years during my childhood — she was my island in a sea of change. She is my heroine.
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