What is the vertex of y = 2x^2 + 8x +5y=2x2+8x+5?

1 Answer
Dean R.
Apr 19, 2018

The vertex may be gotten several ways, including completing the square: y = 2(x^2+4x) +5y=2(x2+4x)+5 = 2(x^2 + 4x + 4) - 8 + 5 ==2(x2+4x+4)−8+5= 2(x+2)^2-32(x+2)2−3 so a vertex at (x,y)=(-2,-3)(x,y)=(−2,−3),

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