Question

va rog o rezolvare deplina

Answer 1

$\it f'(x)=3x^2+4x-2\\ \\ f'(x)=0 \Rightarrow 3x^2+4x-2=0\\ \\ \Delta '=4+6=10;\ \ \ x_{1,2}=\dfrac{-2\pm\sqrt{10}}{3}$