Question 991724
Convert to vertex form by completing the square.
{{{y=x^2+4x-1}}}
{{{y=(x^2+4x+4)-1-4}}}
{{{y=(x+2)^2-5}}}
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Vertex : ({{{-2}}},{{{-5}}})
Axis of symmetry : {{{x=-2}}}
Min. value : {{{y[min]=-5}}}
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*[illustration rt4.JPG].