If f(x) = i x i, for what value of x does f(x - 3) = f(x + 3)?
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The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

(hurry! ) which expression is equivalent to the following complex fraction?

Is a square always, sometimes, or never a parallelogram