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OpenStudy (anonymous):
f(x)=x^2-2x-8 find the vertex x-int and y-int
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myininaya (myininaya):
f(x)=(x^2-2x+1)-8-1=(x-1)^2-9 Vertex is (1,-9) find x intercept let y=0 solve for x find y intercept let x=0 solve for y
myininaya (myininaya):
0=(x-1)^2-9 solve this for x y=(0-1)^2-9 solve this for y
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