Question 392297
Write each function in vertex form: 
y=x^2+9x+8
y-8 = x^2+9x
y-8+(9/2)^2 = x^2+9x+(9/2)^2
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y+12.25 = (x+(9/2))^2
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Vertex: (-9/2,-12.25)
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{{{graph(400,300,-10,20,-20,20,x^2+9x+8)}}}
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Cheers,
Stan H.