y=1/2(二分之一)x²+3x-5/2y=(1/2)x^2+3x-5/2=(1/2)(x+3)^2-7y+7=(1/2)(x+3)^2所以是把向左平移3个单位向下平移7个单位 我知道这样写,但是我不知道怎么吧原来的式子改写成 y=(1
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![y=1/2(二分之一)x²+3x-5/2y=(1/2)x^2+3x-5/2=(1/2)(x+3)^2-7y+7=(1/2)(x+3)^2所以是把向左平移3个单位向下平移7个单位 我知道这样写,但是我不知道怎么吧原来的式子改写成 y=(1](/uploads/image/z/3816268-52-8.jpg?t=y%3D1%2F2%28%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80%EF%BC%89x%26%23178%3B%2B3x-5%2F2y%3D%281%2F2%29x%5E2%2B3x-5%2F2%3D%281%2F2%29%28x%2B3%29%5E2-7y%2B7%3D%281%2F2%29%28x%2B3%29%5E2%E6%89%80%E4%BB%A5%E6%98%AF%E6%8A%8A%E5%90%91%E5%B7%A6%E5%B9%B3%E7%A7%BB3%E4%B8%AA%E5%8D%95%E4%BD%8D%E5%90%91%E4%B8%8B%E5%B9%B3%E7%A7%BB7%E4%B8%AA%E5%8D%95%E4%BD%8D+++++++++++++++++++++++++++++++++%E6%88%91%E7%9F%A5%E9%81%93%E8%BF%99%E6%A0%B7%E5%86%99%2C%E4%BD%86%E6%98%AF%E6%88%91%E4%B8%8D%E7%9F%A5%E9%81%93%E6%80%8E%E4%B9%88%E5%90%A7%E5%8E%9F%E6%9D%A5%E7%9A%84%E5%BC%8F%E5%AD%90%E6%94%B9%E5%86%99%E6%88%90++++y%3D%281)
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