Question

choose weather the following is always, sometimes or never true. x^3=3x
a.always
b.sometime
cnever

Answer 1

*whether ;-)

Answer 2

try solving x^3 = 3x

Answer 3

that's not right. There are solutions to x^3 = 3x

x^3 = 3x
if and only if
x^3 - 3x = 0
x(x^2 - 3) = 0

Now are there solutions to that last equation?

Answer 4

Sometime.
square root of 3.

Answer 5

Yea, sorry. My mistake.