Answered

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Rewrite each relation in the form y = a(x-h)2 + k by completing the square, then state the vertex.

y = -2x^2 – 12x - 7

Sagot :

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Explanation:

h = b/2a

h= -12/2(-2)

h= -12/-4

h= 3

k = 4ac - b^2/ 4a

k = 4(-2)(-7) - (-12)^2/ 4(-2)

k = 56 - 144 / -8

k = -88 / -8

k = 11

y = -2x^2 - 12x - 7 in the form a(x-h)^2 + k

= -2(x + 3)^2 + 11

vertex = (h,k)

therefore the vertex is 3 and 11

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