求把y=﹣16t²+64t+12化为顶点式,y=a(x+h)²-k
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求把y=﹣16t²+64t+12化为顶点式,y=a(x+h)²-k
求把y=﹣16t²+64t+12化为顶点式,y=a(x+h)²-k
求把y=﹣16t²+64t+12化为顶点式,y=a(x+h)²-k
y=﹣16t²+64t+12
=-16(t²-4t+4)+76
=-16(t-2)²+76