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OpenStudy (anonymous):
y=-2x^2+8x+9 finding the vertex of the graph
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OpenStudy (butterflydreamer):
firstly, use the formula that you use to find the axis of symmetry: |dw:1430661173664:dw|
OpenStudy (anonymous):
(x+4)^2
OpenStudy (anonymous):
wait a is-2?
OpenStudy (butterflydreamer):
hm... Alright so let's start from the very beginning okay? ^_^ |dw:1430661319970:dw|
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