The function 𝑓(𝑥)=2𝑥^3−21𝑥^2+60𝑥−7 has two critical values. The smaller one equals ____ and the larger one equals _____

Question

I'm not understanding what its asking me

The function 𝑓(𝑥)=2𝑥^3−21𝑥^2+60𝑥−7 has two critical values. 

The smaller one equals  

the larger one equals

Answer 1

f'(x) = 6x² - 42x + 60 = 0, or x² - 7x + 10 = 0, x = 2 is smaller critical point, x = 5 is larger critical point