Solve the equations.

a) [[$ x^3 - x = 0 $]]

Answer: [[$ x = $]] or [[$ x = $]] or [[$ x = $]]

b) [[$ x^4 - 4x^2 = 0 $]]

Answer: [[$ x = $]] or [[$ x = $]] or [[$ x = $]]

Take a picture of your solution and return it to the submission folder.