计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)要用简便计算 [(x+¼y)²+(x-¼y)²](2x²-1/8y²)刚刚题目打错了
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 12:36:45
![计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)要用简便计算 [(x+¼y)²+(x-¼y)²](2x²-1/8y²)刚刚题目打错了](/uploads/image/z/657543-39-3.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%5B%28x%EF%BC%8B%26%23188%3By%29%EF%BC%8B%28x-%26%23188%3By%29%5D%282x%26%23178%3B-1%2F8y%26%23178%3B%29%E8%AE%A1%E7%AE%97%EF%BC%9A%5B%28x%EF%BC%8B%26%23188%3By%29%EF%BC%8B%28x-%26%23188%3By%29%5D%282x%26%23178%3B-1%2F8y%26%23178%3B%29%E8%A6%81%E7%94%A8%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+%5B%28x%EF%BC%8B%26%23188%3By%29%26%23178%3B%EF%BC%8B%28x-%26%23188%3By%29%26%23178%3B%5D%282x%26%23178%3B-1%2F8y%26%23178%3B%29%E5%88%9A%E5%88%9A%E9%A2%98%E7%9B%AE%E6%89%93%E9%94%99%E4%BA%86)
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计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)要用简便计算 [(x+¼y)²+(x-¼y)²](2x²-1/8y²)刚刚题目打错了
计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)
计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)
要用简便计算
[(x+¼y)²+(x-¼y)²](2x²-1/8y²)
刚刚题目打错了
计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)计算:[(x+¼y)+(x-¼y)](2x²-1/8y²)要用简便计算 [(x+¼y)²+(x-¼y)²](2x²-1/8y²)刚刚题目打错了
原式=2x( 2(x²-1/16 y²) )
=4x(x+1/4y)(x-1/4y)
4x^3-1/8x^2*y^2
原式=2x [2(x²-1/4y²)]
=4x(x+1/2y)(x-1/2y)