Y=(8000-x)(12+5x)化成顶点式如题

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Y=(8000-x)(12+5x)化成顶点式如题
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Y=(8000-x)(12+5x)化成顶点式如题
Y=(8000-x)(12+5x)化成顶点式
如题

Y=(8000-x)(12+5x)化成顶点式如题
Y=(8000-x)(12+5x)
=96000+40000x-12x-5x^2
=-5x^2+39988x+96000
=-5(x^2-7997.6x)+96000
=-5(x-3998.8)^2+80048007.2