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31 December, 17:17

1.) Which function in vertex form is equivalent to f (x) = x2 + x + 1?

f (x) = [x + 1/4]2 + 3/4

f (x) = [x + 1/4]2 + 5/4

f (x) = [x + 1/2]2 + 3/4

f (x) = [x + 1/2]2 + 5/4

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Answers (1)
  1. 31 December, 17:44
    0
    Hello,

    Answer C

    x²+x+1 = (x²+2*1/2*x+1/4) + 1-1/4 = (x+1/2) ²+3/4
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