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Ok, so this is probably really easy and I'm just not seeing it, but I'm stuck on this. Solve problem for the specified variable: y=a(x-h)^2+k, solve for a so I thought I should first square x-h and then distribute a I got y=a(x^2 -xh-xh+h^2)+k then y=ax^2 -2axh+ah^2 +k Now I have no idea how...