# precalculus

The equation of the line joining the complex numbers -5 + 4i and 7 + 2i can be expressed in the form az + b \overline{z} = 38 for some complex numbers a and b. Find the product ab.

I can get the equation of the line by slope intercept but I don't know how to do this in the form az + b \overline{z} = 38

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