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7-41.

Write the quadratic function in problem 7-40 in graphing form and sketch its graph.

Factor out the 3 and separate it from the constant.

Complete the square.
Add the value that completes the square inside the parentheses
and subtract it outside.
(Why is the value subtracted 3 not 1?)

Upward parabola, vertex at (negative 1, comma negative 2).