抛物线y=ax平方;+2ax+3经过B、D、C三点,已知DC‖x轴,点A、B在x轴上,点C在y轴上,抛物线y=ax²+2ax+3经过B、D、C三点,已知DC∥x轴,点A、B在x轴上,点C在y轴上,且BC= (1)\x05求抛物线的对称轴(2)\x05
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![抛物线y=ax平方;+2ax+3经过B、D、C三点,已知DC‖x轴,点A、B在x轴上,点C在y轴上,抛物线y=ax²+2ax+3经过B、D、C三点,已知DC∥x轴,点A、B在x轴上,点C在y轴上,且BC= (1)\x05求抛物线的对称轴(2)\x05](/uploads/image/z/10139221-37-1.jpg?t=%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%E5%B9%B3%E6%96%B9%3B%2B2ax%2B3%E7%BB%8F%E8%BF%87B%E3%80%81D%E3%80%81C%E4%B8%89%E7%82%B9%2C%E5%B7%B2%E7%9F%A5DC%E2%80%96x%E8%BD%B4%2C%E7%82%B9A%E3%80%81B%E5%9C%A8x%E8%BD%B4%E4%B8%8A%2C%E7%82%B9C%E5%9C%A8y%E8%BD%B4%E4%B8%8A%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%26%23178%3B%2B2ax%2B3%E7%BB%8F%E8%BF%87B%E3%80%81D%E3%80%81C%E4%B8%89%E7%82%B9%2C%E5%B7%B2%E7%9F%A5DC%E2%88%A5x%E8%BD%B4%2C%E7%82%B9A%E3%80%81B%E5%9C%A8x%E8%BD%B4%E4%B8%8A%2C%E7%82%B9C%E5%9C%A8y%E8%BD%B4%E4%B8%8A%2C%E4%B8%94BC%3D+%EF%BC%881%EF%BC%89%5Cx05%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%EF%BC%882%EF%BC%89%5Cx05)
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