Question

What is the solution to the inequality √x <9

Answer 1

this is just wrong

Answer 2

if
\[\sqrt{x}<9\] then
\[0<x<81\]

Answer 3

really? for example

\[25>3\] but
\[\sqrt{25}=5<9\] yes?
and
\[-3<-1<3\] but
\[\sqrt{-1}\] is not a real number. no, i am right.