f(x)=[(x+2)/(x+1)](2x-7)

I keep getting [-2x^2+7x-3] / (x+1)

but that is not one of the answer choices.

Also, (x-2)/sqrt(x^2-1)

Find an equation for the tan line to the graph f at the point P(pi/4, f(pi/4)) when f(x)=9tan x

Let f(x) = (4x-1)^6(3x+3)^2 Find the x-intercept of the tan line to the graph of f at the pt where the graph of f crosses the y-axis