# Math Help - Critical Values

1. ## Critical Values

Find all critical values for the function: f(x)= $(2x+10)/(x^2+x+1)$

2. Originally Posted by biermann33
Find all critical values for the function: f(x)= $(2x+10)/(x^2+x+1)$
Use the quotient rule to calculate the derivative. Set the numerator of the derivative equal to zero and solve for $x$.