1.把抛物线y=6x²+12x+3配成顶点式(写过程)2.抛物线与坐标轴最少有______几个交点,最多有______个交点3.用顶点坐标公式求抛物线y=负½x²-3x+2的对称轴、顶点坐标4.求抛物线y=x²-6x+8
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![1.把抛物线y=6x²+12x+3配成顶点式(写过程)2.抛物线与坐标轴最少有______几个交点,最多有______个交点3.用顶点坐标公式求抛物线y=负½x²-3x+2的对称轴、顶点坐标4.求抛物线y=x²-6x+8](/uploads/image/z/5334868-28-8.jpg?t=1.%E6%8A%8A%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D6x%26%23178%3B%2B12x%2B3%E9%85%8D%E6%88%90%E9%A1%B6%E7%82%B9%E5%BC%8F%EF%BC%88%E5%86%99%E8%BF%87%E7%A8%8B%EF%BC%892.%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8E%E5%9D%90%E6%A0%87%E8%BD%B4%E6%9C%80%E5%B0%91%E6%9C%89______%E5%87%A0%E4%B8%AA%E4%BA%A4%E7%82%B9%2C%E6%9C%80%E5%A4%9A%E6%9C%89______%E4%B8%AA%E4%BA%A4%E7%82%B93.%E7%94%A8%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%87%E5%85%AC%E5%BC%8F%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D%E8%B4%9F%26%23189%3Bx%26%23178%3B-3x%2B2%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E3%80%81%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%874.%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx%26%23178%3B-6x%2B8)
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