1. The problem statement, all variables and given/known data use implicit differentiation to find an equation of the tangent line to the curve a the given point. y^2(y^2-4) = x^2(x^2-5) at (0,-2) 2. Relevant equations y^2(y^2-4) = x^2(x^2-5) 3. The attempt at a solution I got dy/dx to be (3x^2-10x)/(4y^3-8y) but the answer book says otherwise: (4x^3-10x)/(4y^3-8y) while it works out with the point since 0/anything = 0 (which is the answer of what the slope it at that point) i ended up getting the wrong formula in the first place - how is one to do this question then?