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11-20.
  1. Complete the square to convert each of the following quadratic functions to graphing form. State the vertex and sketch the graph. Homework Help ✎

    1. f(x) = x2 + 6x + 7

    2. f(x) = x2 − 10x

f(x) = (x2 + 6x + 9) − 9 + 7

f(x) = (x + 3)2 − 2

vertex: (−3, −2)

See part (a).