calculus help please! critical points?

Question

i have an equation for which i have to find the critical points (where it changes from increaeing to decreasing). for this i need to find when yprime = 0. i end up with the equation
0= -3(x^2 - 4x +5). this cannot be factored and the quadratic formula gives me an imaginary number. how do i find the critical point?

Answer 1

There are no critical points and the function is always decreasing as -3(x^2-4x+5) is negative