Question #4a77e

1 Answer
Oct 25, 2017

(-oo,oo)

Explanation:

If the question is |x||x| >= 0 you have that xx <= 0 or 0<= xx. But every number verifies that. In fact if xx is a negative number x<0x<0 and if it's positive x>0x>0, finally if it's 00 then x=0x=0. Then x x must be in (-oo,oo)(,) which is x in RR