1. The problem statement, all variables and given/known data A curve has an equation .. y=x^3-5x^2+5x+2 a) find dy/dx in terms of x The points P and Q lie on C. The gradient of C at both P and Q is 2. The x-coordinate of P is 3 b) Fine the x-coordinate of Q c) Find and equation for the tangent to c at P, giving your answer in the form y=mx + c, where m and c are constants. 2. Relevant equations 3. The attempt at a solution I'm not whether I got parts a or b right, however completely stuck on part c. a) dy/dx = 3x^2 -10x +5 b) y = ax+b y = -1 a = 2 x = 3 -1 = (2*3) + b -1 = 6 + b -7 = b y = 2x -7 So. 2x-7 = 3x^2 -10x +5 0 = 3x^2 -12x +12 0= x^2-4x+4 (x-2) (x-2) So x =2? Part c I have no idea where to start.