In an example in my textbook, it says the following:(adsbygoogle = window.adsbygoogle || []).push({});

"If -1 ≤ x ≤ 1, then 0 ≤ x^{2}≤ 1. "

Can someone explain to me how to move from the first statement to the second statement please? I'm not quite sure how the -1 turned into a 0...

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Manipulating an inequality

**Physics Forums | Science Articles, Homework Help, Discussion**