Question

can you square across an inequality?

Answer 1

No

Answer 2

\(\geq^2\) like that?

Answer 3

-4<0
Squaring both sides: 16<0
Doesn't always work, does it?

Answer 4

\(-2<1\) what happens when you square?

Answer 5

oh, you would get 4 < 1

Answer 6

how do you know when you can square things, or can you just not square things at all?

Answer 7

You can square across when you have an inequality \(a > b\) and \(a,b\) are positive.

Answer 8

Or rather, nonnegative.