: To learn to use mathematical way of thinking to observe, analyze social reality, from a mathematical point of asking questions, understand the problem, and can be integrated use of the knowledge and skills to solve problems, develop awareness of the application, a quadratic equation has many close to life practical application, now cite a few examples are as follows: First, a practical case of a problem as the background has a meeting room, its floor length 20m, width 15m

quadratic equation with one unknown.doc

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