keria18 keria18

25-04-2018
Mathematics

contestada

what is the vertex of y=2x^2+4x+5

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Cowmilk Cowmilk

25-04-2018

[tex] - \frac{b}{2a} = - \frac{4}{2} = - 2 \\ x = - 2 \\ \\ y = 2 {( - 2)}^{2} + 4( - 2) + 5 \\ 2(4) - 8 + 5 \\ 8 - 8 + 5 \\ y = 5 \\ \\ vertex = ( - 2 \: \: \: 8)[/tex]
(-2,8)

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