Find the equations of the 2 tangent lines to the graph of f that pass through the indicated point.

f(x)= 4x-x^2 point is (2, 5)

The farthest I have gotten with this is writting this:

(a^2-5)/(a-2)

The next thing is I'm trying to figure out the equal thingy..

a^2-5 = ???