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OpenStudy (brittany):
the graph of this quadratic function is a parabola. what is the equation of the axis of symmetry y=x^2+2x+1
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OpenStudy (anonymous):
\[\frac{-b}{2a}\]
OpenStudy (anonymous):
hurray! \[-\frac{b}{2a}=-\frac{2}{2}=-1\] \[x=-1\] is your axis of symmetry
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