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OpenStudy (anonymous):
Which point is the vertex of the parabola y = x2+4x+1? A. (-2, -3) B. (2, 3) C. (-2, 3) D. (2, -3)
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OpenStudy (anonymous):
hero :)
hero (hero):
x = -b/2a = -4/2(1) = -2 y = (-2)^2+4(-2)+1 = 4-8 +1 = 5-8 = -3 (x,y) = (-2,-3)
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