怎么会酱紫的?y=-3x^-6x+8y=-3(x^-6x+9)+9+8y=-3(x-3)^+11为什么后面是+9 而不是-9?"^"是平方答案应该是y=-3(x+1)^+11
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![怎么会酱紫的?y=-3x^-6x+8y=-3(x^-6x+9)+9+8y=-3(x-3)^+11为什么后面是+9 而不是-9?](/uploads/image/z/8731397-29-7.jpg?t=%E6%80%8E%E4%B9%88%E4%BC%9A%E9%85%B1%E7%B4%AB%E7%9A%84%3Fy%3D-3x%5E-6x%2B8y%3D-3%28x%5E-6x%2B9%29%2B9%2B8y%3D-3%28x-3%29%5E%2B11%E4%B8%BA%E4%BB%80%E4%B9%88%E5%90%8E%E9%9D%A2%E6%98%AF%2B9+%E8%80%8C%E4%B8%8D%E6%98%AF-9%3F%22%5E%22%E6%98%AF%E5%B9%B3%E6%96%B9%E7%AD%94%E6%A1%88%E5%BA%94%E8%AF%A5%E6%98%AFy%3D-3%28x%2B1%29%5E%2B11)
怎么会酱紫的?y=-3x^-6x+8y=-3(x^-6x+9)+9+8y=-3(x-3)^+11为什么后面是+9 而不是-9?"^"是平方答案应该是y=-3(x+1)^+11
怎么会酱紫的?
y=-3x^-6x+8
y=-3(x^-6x+9)+9+8
y=-3(x-3)^+11
为什么后面是+9 而不是-9?
"^"是平方
答案应该是y=-3(x+1)^+11
怎么会酱紫的?y=-3x^-6x+8y=-3(x^-6x+9)+9+8y=-3(x-3)^+11为什么后面是+9 而不是-9?"^"是平方答案应该是y=-3(x+1)^+11
y=-3x^-6x+8
y=-3(x^+2x-8/3)
y=-3(x^+2x+1-1-8/3)
y=-3(x^+2x+1-11/3)
y=-3[(x+1)^2-11/3]
y=-3(x+1)^2+11