Please help!!!!!!

Question

Find the difference quotient 𝑓(𝑥)−𝑓(3)/𝑥−3 when 𝑓(𝑥)=1+5𝑥−5𝑥^2. Simplify the expression fully as if you were going to compute the limit as 𝑥→3. In particular, cancel common factors of 𝑥−3 in the numerator and denominator if possible. (Use symbolic notation and fractions where needed.)

𝑓(𝑥)−𝑓(3)/𝑥−3=

Answer 1

(f(x)-f(3)) / (x-3) = (1+5x-5x²+29) / (x-3) = [-5(x²-x-6)] / (x-3) = -5(x-3)(x+2)/(x-3) = -5x - 10