Question

please help with the multiple choice: 

What are the x-intercepts of a rough sketch of f(x)=8 x3

−2x  ?


   A  The x-intercepts are 0, 4 and -4
   B The x-intercepts are 0, 1/4 and -1/4
   C  The x-intercepts are 1/4 and -1/4 T
   D  he x-intercepts are 4 and -4

Answer 1

8 x³ - 2x = 0
2x (4 x² - 1 ) = 0
2 x (2x + 1) ( 2x - 1) = 0
x = 0 or x = -1/2 or x = 1/2